Tag Archives: Rav Yitzchak Ginsburgh

Red Cow: Quantum Physics in the Torah

This week’s parasha, Chukat, begins with the laws of the Red Cow (or “Red Heifer”). The Torah describes in detail the Red Cow ritual, starting with the production of a special mixture which alone had the power to remove the greatest of impurities, the impurity of death. (Because we lack this mixture today, everyone is considered ritually impure at all times, and this is one reason why most Orthodox authorities discourage Jews from ascending the Temple Mount in Jerusalem.) First, the Torah requires finding a perfectly red calf. The Sages elaborate that even two non-red hairs invalidate a cow. The calf must also be entirely unblemished, and in perfect health. It must not have ever been used for any kind of labour. The simple act of putting a yoke on the cow—even if just for a moment—immediately disqualifies it.

Rabbis inspect a red cow in Israel (Courtesy: Temple Institute). Jewish tradition maintains there have only been nine red cows used in history. The tenth will come in the time of Mashiach.

Once such a cow is found, it is taken to the Temple and appropriately slaughtered. The High Priest takes some of its blood and sprinkles it towards the Holy of Holies (or the “Tent of Meeting”). The cow is then entirely consumed in flames, with the added ingredients of cedar wood, hyssop, and crimson wool. At this point, the High Priest has become impure himself, and must go to the mikveh. Another priest (who is pure) must gather the ashes to be used to make the purifying solution. This person, too, becomes impure. Finally, the third pure person who actually prepares the mixture and sprinkles it on the impure people also becomes impure in the process. Perplexingly, the act of purifying others instantly makes the purifier himself impure.

This strange Red Cow ritual puzzled the ancient Sages. They went so far as to say that even King Solomon—the wisest of all men—could not understand the Red Cow (Yoma 14a). The Sages base themselves on Solomon’s own words (Ecclesiastes 7:23): “All this have I tried by wisdom… but it was far from me.” Solomon had all the wisdom, yet there was one thing that was too “far” for him to grasp, and that was the Red Cow. (The Midrash, meanwhile, comments on Solomon’s words in Proverbs 30:18—“Three things are wondrous to me, and four I do not know”—to mean that Solomon didn’t know seven more things.  The three things wondrous to him were the secrets of the Pesach offering, matzah, and maror; and the four he didn’t know were the mysteries of the four species of Sukkot. See Vayikra Rabbah 30:14)

The Sages conclude that the Red Cow has no human logic and is, as the Torah states, a chok, an incomprehensible divine law. In other words, no one understands the Red Cow.

The Nazis tried to ban Einstein’s theories and discoveries. They didn’t like quantum physics very much, and once branded it as a “Jewish science”.

Interestingly, there is a parallel phenomenon in the world of science. The past century and a half has seen the rise of a bewildering new field called quantum physics. Like the Red Cow ritual, many experiments in quantum physics yield results that are incomprehensible. They often contradict the foundational principles of classical physics, and are sometimes just plain bizarre. This may be why Albert Einstein once humorously described quantum physics as a “talmudical theory”. (And may be why Jews are so disproportionately represented in the field.) Niels Bohr, meanwhile, said something along the lines of “Those who are not profoundly shocked when they first come across quantum theory have not understood it.” And Richard Feynman concluded: “I think I can safely say that no one understands quantum mechanics.”

Quantum physics is to science what the Red Cow is to the Torah. In fact, a closer examination may reveal a very intimate connection between the two.

Entanglement

One of the central principles of quantum physics is entanglement. This refers to two particles that are intertwined, and appear to affect one another instantaneously even though they may be very far apart. For example, take the case of two entanglement particles, one with a clockwise spin, and the other with a counter-clockwise spin. If the clockwise particle is forced to spin the other way, the counter-clockwise particle immediately changes its spin as well. This is true even over vast distances, and the effect is immediate, suggesting faster-than-light communication. Einstein famously called this strange phenomenon “spooky action at a distance”.

Entanglement has the potential for many practical applications, and scientists are even working on an un-hackable “quantum internet”. Meanwhile, Stuart Hameroff and Roger Penrose have built an entire biological theory around entanglement, which provides a scientific explanation for the soul, the afterlife, and reincarnation.

Of course, from a Jewish mystical perspective, all souls are intertwined and “entangled”. Entanglement may even explain the strange nature of the Red Cow. Recall that when the pure person sprinkles the mixture upon the impure person, he instantly becomes impure himself while the impure person becomes pure. This is precisely like a counter-clockwise particle instantly switching its spin to clockwise when its fellow entangled particle is made to go from clockwise to counter-clockwise.

Uncertainty Principle

Another foundation of quantum physics is Heisenberg’s Uncertainty Principle. In short, this means that when measuring any given particle, we can either determine its position, or its speed, but not both. If we measure its position, then technically at that split instant the particle isn’t really in motion, so we cannot determine its speed. If we measure its speed, than it can’t be standing still in any one position, so we cannot determine exactly where it is. (The principle can be explained with a classic physics joke: a police officer pulls over a speeding particle and asks: “Do you have any idea how fast you were going?” The particle replies: “No sir, but I know where I am.”)

Rav Yitzchak Ginsburgh beautifully points out that the Torah actually speaks of the Uncertainty Principle. We read in Job 28 of the difference between man’s limited wisdom and God’s omniscience. We are then told that “God understands her path, and He knows her place.” (Job 28:23) Unlike man, who is incapable of grasping such things, God alone knows both the “path” (momentum) and “place” (location) of a particle! Rav Ginsburgh summarizes:

Now, what is the verse saying? Actually, it is saying exactly what Einstein said when he heard that the uncertainty principle was somehow inherent in nature: “God does not play dice with the universe.” It did not sit well with him that God cannot see beyond the uncertainty principle. Little did Einstein know that he had a verse in the Bible to support his intuition that God does know… (Lectures on Torah and Modern Physics, pg. 90)

Wave-Particle Duality

Perhaps the most well-known principle in quantum physics is that of wave-particle duality. This is the notion that every particle is also a wave. The discovery was a result of a much earlier debate (going back at least to the time of Newton) of whether light is a particle or wave. Over the decades, experiments would alternately show that light behaves as a particle, while others would show that light behaves as a wave. Eventually, it was found that photons (particles of light) behave in both ways, and the same is true for other particles, too.

Closely related to this is what is known as the “observer effect”, that the presence of a conscious “observer” actually affects whether a particle will behave as a particle or wave. In the famous double-slit experiment, whenever scientists “watch” a particle it always passes through one slit and leaves a single mark on the screen behind as expected. Yet, whenever they remove the measuring devices and shoot particles without any observation, the particle seemingly goes through both slits simultaneously, and produces a wave-like pattern on the screen!

Notions like this led Max Planck, often called the “father of quantum physics”, to conclude:

As a man who has devoted his whole life to the most clear-headed science, to the study of matter, I can tell you as a result of my research about atoms this much: There is no matter as such. All matter originates and exists only by virtue of a force which brings the particle of an atom to vibration and holds this most minute solar system of the atom together. We must assume behind this force the existence of a conscious and intelligent mind. This mind is the matrix of all matter.

Rav Ginsburgh once more shows how wave-particle duality is secretly embedded in the language of the Torah. The Torah’s word for a “wave” is gal (גל), while the Torah’s word for a tiny drop, or “particle”, is egel (אגל). The two share one root, meaning there is a profound connection between them. Rav Ginsburgh cites ancient commentaries (ibid, pg. 128-129) which explain how a multitude of tiny drops of dew blanketing a field combine to form the appearance of a wave. The Sages are speaking of an observer who seems to be looking at a wave but, upon closer examination, is seeing individual particles of dew. This is little more than a poetic way of describing the scientific “observer effect”, where close observation and measurement shows particles while lack of measurement shows waves.

String Theory in Kabbalah

For decades, physicists have been looking for a “theory of everything” that can elegantly explain all of the various phenomena in the universe. Currently, one very popular such theory is string theory, which holds that the universe boils down to a set of tiny vibrating strings. Differing vibrations would result in particles of different masses and charges, giving rise to the variety of forces and particles in the universe, including a particle that carries gravity (called a graviton). String theory is therefore a good “theory of everything” that can neatly unify all of physics.

Edward Witten is also Jewish, and the son of Louis Witten, another well-known physicist.

In reality, string theory is not one theory, and has multiple versions. In the past, there were five major, accepted models. Then, in 1995 Edward Witten was able to unify these models into one wholesome theory, called M-theory, sparking a “superstring revolution”. Since then, a great deal of work has been done to strengthen and support M-theory, which continues to be one of the leading models in modern physics.

Interestingly, M-theory suggests that the universe has a total of 11 dimensions. Three of these are the familiar dimensions of space (length, width, height). The fourth is the dimension of time, which is really inseparable from the three of space, and part of one continuum. In addition to these, there are seven more dimensions unperceivable to human senses:

 

Etz Chaim, “Tree of Life”, showing the upper sefirot (Keter/Da’at, Chokhmah, and Binah, known as the Mochin), and the seven lower sefirot.

Anyone who has dabbled in Kabbalah will immediately recognize that this conception of 11 dimensions perfectly parallels the “dimensions” of Kabbalah, ie. the Sefirot. In the arrangement of the sefirot, too, we have the three sefirot of the mochin, which are tied to a fourth (usually hidden) sefirah of Da’at, just like the three spatial dimensions are intertwined with time. Below the three mochin are the seven middot. Like the 11 dimensions of M-theory, the Kabbalistic “Tree of Life”—as made popular by the Arizal—is typically shown depicting 11 sefirot. (Yet, the Sages insist that there are ten sefirot, never eleven! It should be noted that in non-M-theory versions of string theory, there are indeed only 10 dimensions.) One who studies both M-theory and the Arizal’s teachings of the sefirot will quickly find tremendous overlap between them.

And one who has delved into the Kabbalah of the Arizal will know just how easy it is to get lost in descriptions of dimensions within dimensions, and universes superimposed upon universes; in souls entangled across vast distances, and across eons of time; and in lengthy formulas of yichudim, kavvanot, and tikkunim (“unifications”, “meditations”, and “rectifications”). In fact, studying the Arizal sometimes feels like studying quantum physics. Truly, the two go hand-in-hand, and are poised to bridge the gap between the realm of science and the realm of the spirit.

Why Do We Pray and What Should We Pray For?

This week’s parasha, Terumah, begins with God’s command to the people to bring their voluntary contributions in support of the construction of the Mishkan, the Holy Tabernacle. One of the oldest Jewish mystical texts, Sefer haBahir, explains that this voluntary “offering of the heart” (as the Torah calls it) refers to prayer, and prayer is how we can fulfil that mitzvah nowadays. Indeed, the root of the term terumah literally means “elevation”, just as we elevate our prayers heavenward.

‘Jew Praying’ by Ilya Repin (1875)

Judaism is known for its abundance of prayer. While Muslims pray five times a day, each of those prayers lasts only a few minutes. Jews may “only” have three daily prayers, yet the morning prayer alone usually takes an hour or so. Besides this, Jews recite berakhot—blessings and words of gratitude to God—on everything they eat, both before and after; on every mitzvah they perform; and even after going to the bathroom. Jewish law encourages a Jew to say a minimum of one hundred blessings a day. This is derived from Deuteronomy 10:12: “And now Israel, what does God ask of you?” The Sages (Menachot 43b) play on these words and say not to read what (מה) does God ask of you, but one hundred (מאה) God asks of you—one hundred blessings a day! The Midrash (Bamidbar Rabbah 18:17) further adds that in the time of King David a plague was sweeping through Israel and one hundred people were dying each day. It was then that David and his Sanhedrin instituted the recital of one hundred daily blessings, and the plague quickly ceased.

Of course, God does not need our blessings at all (as we’ve explained before). By reciting so many blessings, we are constantly practicing our gratitude and recognizing how much goodness we truly receive. This puts us in a positive mental state throughout the day. The Zohar (I, 76b, Sitrei Torah) gives a further mystical reason for these blessings: when a person goes to sleep, his soul ascends to Heaven. Upon returning in the morning, the soul is told “lech lecha—go forth for yourself” (the command God initially gave to Abraham) and it is given one hundred blessings to carry it through the day. There is a beautiful gematria here, for the value of lech lecha (לך לך) is 100. Thus, a person who recites one hundred blessings a day is only realizing the blessings he was already given from Heaven, and extracting them out of their potential into actual benefit.

Not surprisingly then, a Jew starts his day with a whole host of blessings. The morning prayer (Shacharit) itself contains some 47 blessings. Within a couple of hours of rising, one has already fulfilled nearly half of their daily quota, and is off to a great start for a terrific day.

(Courtesy: Aish.com) If one prays all three daily prayers, they will already have recited some 90 blessings. As such, it becomes really easy to reach 100 blessings in the course of a day, especially when adding blessings on food and others.

Having said that, is it absolutely necessary to pray three times a day? Why do we pray at all, and what is the origin of Jewish prayer? And perhaps most importantly, what should we be praying for?

Where Does Prayer Come From?

The word tefilah (“prayer”) appears at least twenty times in the Tanakh. We see our forefathers praying to God on various occasions. Yet, there is no explicit mitzvah in the Torah to pray. The Sages derive the mitzvah of prayer from Exodus 23:25: “And you shall serve [v’avad’tem] Hashem, your God, and I will bless your food and your drink, and I will remove illness from your midst.” The term avad’tem (“worship”, “work”, or “service”) is said to refer to the “service of the heart”, ie. prayer. This verse fits neatly with what was said earlier: that prayer is not about serving God, who truly requires no service, but really about receiving blessing, as God says He will bless us and heal us when we “serve” Him.

So, we have the mitzvah of prayer, but why three times a day? The Rambam (Rabbi Moshe ben Maimon, 1135-1204) clearly explains the development of prayer in his Mishneh Torah (Chapter 1 of Hilkhot Tefillah and Birkat Kohanim in Sefer Ahava):

It is a positive Torah commandment to pray every day, as [Exodus 23:25] states: “You shall serve Hashem, your God…” Tradition teaches us that this service is prayer, as [Deuteronomy 11:13] states: “And serve Him with all your heart”, and our Sages said: “Which is the service of the heart? This is prayer.” The number of prayers is not prescribed in the Torah, nor does it prescribe a specific formula for prayer. Also, according to Torah law, there are no fixed times for prayers.

… this commandment obligates each person to offer supplication and prayer every day and utter praises of the Holy One, blessed be He; then petition for all his needs with requests and supplications; and finally, give praise and thanks to God for the goodness that He has bestowed upon him; each one according to his own ability.

A person who was eloquent would offer many prayers and requests. [Conversely,] a person who was inarticulate would speak as well as he could and whenever he desired. Similarly, the number of prayers was dependent on each person’s ability. Some would pray once daily; others, several times. Everyone would pray facing the Holy Temple, wherever he might be. This was the ongoing practice from [the time of] Moshe Rabbeinu until Ezra.

The Rambam explains that the mitzvah to pray from the Torah means praising God, asking Him to fulfil one’s wishes, and thanking Him. No specific text is needed, and once a day suffices. This is the basic obligation of a Jew, if one wants simply to fulfil the direct command from the Torah. The Rambam goes on to explain why things changed at the time of Ezra (at the start of the Second Temple era):

When Israel was exiled in the time of the wicked Nebuchadnezzar, they became interspersed in Persia and Greece and other nations. Children were born to them in these foreign countries and those children’s language was confused. The speech of each and every one was a concoction of many tongues. No one was able to express himself coherently in any one language, but rather in a mixture [of languages], as [Nehemiah 13:24] states: “And their children spoke half in Ashdodit and did not know how to speak the Jewish language. Rather, [they would speak] according to the language of various other peoples.”

Consequently, when someone would pray, he would be limited in his ability to request his needs or to praise the Holy One, blessed be He, in Hebrew, unless other languages were mixed in with it. When Ezra and his court saw this, they established eighteen blessings in sequence [the Amidah].

The first three [blessings] are praises of God and the last three are thanksgiving. The intermediate [blessings] contain requests for all those things that serve as general categories for the desires of each and every person and the needs of the whole community.

Thus, the prayers could be set in the mouths of everyone. They could learn them quickly and the prayers of those unable to express themselves would be as complete as the prayers of the most eloquent. It was because of this matter that they established all the blessings and prayers so that they would be ordered in the mouths of all Israel, so that each blessing would be set in the mouth of each person unable to express himself.

‘Prayer of the Killed’ by Bronisław Linke

The generation of Ezra and the Great Assembly approximately two and a half millennia ago composed the fixed Amidah (or Shemoneh Esrei) prayer of eighteen blessings. This standardized prayer, and ensured that people were praying for the right things, with the right words. (Of course, one is allowed to add any additional praises and supplications they wish, and in any language.)

Reciting the Amidah alone technically fulfils the mitzvah of prayer, whereas the additional passages that we read (mostly Psalms) were instituted by later Sages in order to bring one to the right state of mind for prayer. (Note that the recitation of the Shema is a totally independent mitzvah, although it is found within the text of prayer. The only other Torah-mandated prayer mitzvah is reciting birkat hamazon, the grace after meals.) The Rambam continues to explain why three daily prayers were necessary:

They also decreed that the number of prayers correspond to the number of sacrifices, i.e. two prayers every day, corresponding to the two daily sacrifices. On any day that an additional sacrifice [was offered], they instituted a third prayer, corresponding to the additional offering.

The prayer that corresponds to the daily morning sacrifice is called the Shacharit prayer. The prayer that corresponds to the daily sacrifice offered in the afternoon is called the Minchah prayer and the prayer corresponding to the additional offerings is called the Musaf prayer.

They also instituted a prayer to be recited at night, since the limbs of the daily afternoon offering could be burnt the whole night, as [Leviticus 6:2] states: “The burnt offering [shall remain on the altar hearth all night until morning].” In this vein, [Psalms 55:18] states: “In the evening, morning, and afternoon I will speak and cry aloud, and He will hear my voice.”

The Arvit [evening prayer] is not obligatory like Shacharit and Minchah. Nevertheless, the Jewish people in all the places that they have settled are accustomed to recite the evening prayer and have accepted it upon themselves as an obligatory prayer.

Since customs that are well-established and accepted by all Jewish communities become binding, a Jew should ideally pray three times daily. The Rambam goes on to state that one may pray more times if they so desire, but not less. We see a proof-text from Psalms 55:18, where King David clearly states that he prays “evening, morning, and afternoon”. Similarly, we read of the prophet Daniel that

he went into his house—with his windows open in his upper chamber toward Jerusalem—and he kneeled upon his knees three times a day, and prayed, and gave thanks before his God, as he had always done. (Daniel 11:6)

The Tanakh also explains why prayer was instituted in the place of sacrifices. The prophet Hoshea (14:3) stated that, especially in lieu of the Temple, “we pay the cows with our lips”. King David, too, expressed this sentiment (Psalms 51:17-18): “My Lord, open my lips and my mouth shall declare Your praise. For You have no delight in sacrifice, else I would give it; You have no pleasure in burnt-offerings.” This verse is one of many that shows God does not need animal sacrifices at all, and the Torah’s commands to do so were only temporary, as discussed in the past. It was always God’s intention for us to “serve” Him not through sacrifices, but through prayers. (See also Psalms 69:31-32, 141:2, and Jeremiah 7:21-23.)

The Mystical Meaning of Prayer

While the Sages instruct us to pray at regular times of the day, they also caution that one should not make their prayers “fixed” or routine (Avot 2:13). This apparent contradiction really means that one’s prayer should be heartfelt, genuine, and not recited mechanically by rote. One should have full kavanah, meaning the right mindset and complete concentration. The Arizal (and other Kabbalists) laid down many kavanot for prayer, with specific things to have in mind—often complex formulas of God’s Names or arrangements of Hebrew letters, and sometimes simple ideas to think of while reciting certain words.

The Arizal explained (in the introduction to Sha’ar HaMitzvot) that one should not pray only because they need something from God. Rather, prayer is meant to remind us that God is the source of all blessing and goodness (as discussed above) and reminds us that only the Infinite God can provide us with everything we need. By asking things of God, we ultimately to draw closer to Him, like a child to a parent. There is also a much deeper, more mystical reason for prayer. Praying serves to elevate sparks of holiness—and possibly even whole souls—that are trapped within kelipot, spiritual “husks” (Sha’ar HaGilgulim, ch. 39). Prayer is part of the long and difficult process of tikkun, rectifying Creation and returning it to its perfect primordial state.

The Zohar (II, 215b) further states that there are four tikkunim in prayer: tikkun of the self, tikkun of the lower or physical world, tikkun of the higher spiritual worlds, and the tikkun of God’s Name. Elsewhere (I, 182b), the Zohar explains that man is judged by the Heavens three times daily, corresponding to the three prayer times. This fits well with the famous Talmudic statement (Rosh Hashanah 16b) that prayer is one of five things that can change a person’s fate, and annul any negative decrees that may be upon them. (The other four are charity, repentance, changing one’s name, or moving to a new home.)

I once heard a beautiful teaching in the name of the Belzer Rebbe that ties up much of what has been discussed so far:

According to tradition, Abraham was first to pray Shacharit, as we learn from the fact that he arose early in the morning for the Akedah (Genesis 22:3, also 19:27, 21:14). Isaac instituted Minchah, as we read how he went “to meditate in the field before evening” (Genesis 24:63). Jacob instituted the evening prayer, as we learn from his nighttime vision at Beit El (Genesis 28).

Each of these prayers was part of a cosmic tikkun, the rebuilding of the Heavenly Palace (or alternatively, the building of Yeshiva shel Ma’alah, the Heavenly Study Hall). God Himself began the process, and raised the first “wall” in Heaven with his camp of angels. This is the “camp of God” (מחנה) that Jacob saw (Genesis 32:3). Abraham came next and built the second “wall” in Heaven through his morning prayer on the holy mountain (הר) of Moriah (Genesis 22:14). Then came Isaac and built the third Heavenly wall when he “meditated in the field” (שדה). Jacob erected the last wall and finally saw a “House of God” (בית). Finally, Moses completed the structure by putting up a roof when he prayed Va’etchanan (ואתחנן). These terms follow an amazing numerical pattern: מחנה is 103, הר is 206 (with the extra kollel)*, שדה is 309, בית is 412, and ואתחנן is 515. Each prayer (and “wall”) of the forefathers is a progressive multiple of 103 (God’s wall).

We can learn a great deal from this. First, that prayer helps to build our “spiritual home” in Heaven. Second, that prayer both maintains the “walls” of God’s Palace in Heaven, and broadens His revealed presence on this Earth. And finally, that prayers are much more than praises and requests, they are part of a great cosmic process of rectification.

What Should We Pray For?

Aside from the things we request in the Amidah and other prayers, and aside from the all mystical kavanot we should have in mind, what else should we ask for in our personal prayers? A person can ask God of anything that they wish, of course. However, if they want their prayers answered, our Sages teach that it is better to prayer not for one’s self, but for the needs of others. We learn this from the incident of Abraham and Avimelech (Genesis 20). Here, God explicitly tells Avimelech that when Abraham prays for him, he will be healed. After the Torah tells us that Abraham prayed for Avimelech and his household was indeed healed, the very next verse is that “God remembered Sarah” and continues with the narrative of Isaac’s birth. Thus, we see how as soon as Abraham prayed for Avimelech’s household to be able to give birth to children, Abraham himself finally had a long-awaited child with Sarah.

Speaking of children, the Talmud advices what a person should pray for during pregnancy (Berakhot 60a). In the first three days after intercourse, one should pray for conception. In the first forty days of pregnancy, one can pray for which gender they would like the child to be, while another opinion (54a) holds that one shouldn’t pray for this and leave it up to God. (Amazingly, although gender is determined by chromosomes upon conception, we know today that gender development actually begins around day 42 of gestation. So, just as the Talmud states, there really is no point in hoping for a miraculous change in gender past day 40.) Henceforth in the first trimester, one should pray that there shouldn’t be a miscarriage. In the second trimester, one should pray that the child should not be stillborn, God forbid. In the final trimester, one should pray for an easy delivery.

Lastly, in addition to common things that everyone prays for (peace, prosperity, health, etc.) the Talmud states that there are three more things to pray for: a good king, a good year, and a good dream (Berakhot 55a). The simple meaning here is to pray that the government won’t oppress us, that only good things will happen in the coming year, and that we will be able to sleep well without stresses and worries. Rav Yitzchak Ginsburgh points out that a good king (מלך) starts with the letter mem; a good year with shin (שנה); and good dream (חלום) with chet. This spells the root of Mashiach, for it is only when Mashiach comes that we will finally have a really good king, a really good year, and have the most peaceful sleep, as if we are living in a good dream.

Courtesy: Temple Institute


*Occasionally, gematria allows the use of a kollel, adding one to the total. There are several reasons for doing this, and the validity of the practice is based on Genesis 48:5. Here, Jacob says that Ephraim and Menashe will be equal to Reuben and Shimon. The gematria of “Ephraim and Menashe” (אפרים ומנשה) is 732, while the gematria of “Reuben and Shimon” (ראובן ושמעון) is 731. Since Jacob himself said they are equal, that means we can equate gematriot that are one number away from each other!

For those who don’t like kollels and want exact numbers (as I do), we can present another solution: Abraham’s prayer is the only one not exactly a multiple of God’s original “wall” of 103. The reason that one wall is “incomplete”, so to speak, is because every house needs an opening—Abraham’s wall is the one with the door, so his wall is a tiny bit smaller!