Study laws daily and you are promised the World to Come? Isn't that too easy?
The sentence is short. Whoever studies halachot (Jewish laws) every day is promised that he is a "ben olam haba," a son of the World to Come. It does not say how much to study, or what happens if you miss a day.
Look at the words "every day." The Gemara in Niddah has them. The Gemara in Megillah quotes the same teaching without them. The siddur includes them.
It is also not the only way in. The Mishnah says all Israel has a portion in the World to Come, with a short list of exceptions. One explanation comes from the Ben Yehoyada (a commentary on the Gemara's stories by Rabbi Yosef Chaim of Baghdad, written in the 1800s). He says, passing on a teaching of the Ari (the great Kabbalist of Tzfat in the 1500s), that having a "portion" in the World to Come means you still need other righteous people to carry you there. A "son" of the World to Come does not, and can even lift others. A person who learns law helps others know how to act, so he earns that.
The sources also disagree about what counts as halachot. Rashi's commentary on this line in Niddah, as printed, says: Mishnah and Baraita (teachings of the early Sages), law given to Moshe at Sinai.
The Drisha (a commentary by Rabbi Yehoshua Falk, around 1600, on the Tur, a code of Jewish law from the 1300s) reports that some people who were not full-time scholars learned only Gemara with Rashi and Tosafot each day, skipped the law codes, and used this sentence as their proof. He argues against them, quotes Rashi as saying "decided laws," and says a person should study the law codes. The Turei Zahav (a commentary on the Shulchan Aruch, the main code of Jewish law, written in the 1600s) repeats his words.
A modern reading comes from Peninei Halakhah (a guide to Jewish law by Rabbi Eliezer Melamed). He takes the word game as the point: studying law each day ties your own walking, your halichot, to something that lasts.
Niddah 73a and Megillah 28b,Mishnah Sanhedrin 10:1,Ben Yehoyada on Niddah 73a,Rashi on Niddah 73a,Drisha on the Tur, Yoreh Deah 246; Turei Zahav, Yoreh Deah 246:2,Peninei Halakhah, Likkutim I, Introduction 3The Gemara says "don't read it that way, read it this way." Isn't that changing the Torah?
The prayer does this twice. The verse in Chavakuk says halichot, "ways." The Gemara says: do not read halichot, read halachot, "laws." The verse in Yeshayahu says banayich, "your children." The Gemara says: do not read banayich, read bonayich, "your builders."
The Gemara states a general rule about readings. In Shabbat 63a a sage says: a verse does not leave its plain meaning, even when there are other readings of it. Rava states the same rule for the whole Torah in Yevamot 24a, while pointing to one case where it is overridden. Those passages do not say whether the rule covers every "do not read."
Take the first example. The plain meaning of Chavakuk 3:6 is God's ancient ways. The Gemara hears the same word as law, one letter different. Both words come from the root for walking.
Take the second. Yeshayahu 54 speaks to a woman who is also pictured as a city being rebuilt. A few verses earlier God promises foundations of sapphires. The plain meaning of 54:13 is that all her children will be taught by Hashem and have great peace. The Gemara adds a vav, hears "your builders," and applies it to Torah scholars. Rabbi Adin Steinsaltz, in his modern commentary on the Gemara, states the idea behind the verse this way: if all Israel are taught by God, there is peace for all.
What the Gemara does not do here is explain its method. These sources do not say whether such a reading is a memory aid, a hint, or a second meaning inside the verse. That stays open.
Niddah 73a,Berakhot 64a,Chavakuk 3:6,Yeshayahu 54:11 and 54:13,Shabbat 63a,Yevamot 24a,Steinsaltz on Berakhot 64aTorah scholars argue about everything. How does that increase peace?
Look at the two lines right next to each other at the end of Berakhot. One says Torah scholars have no rest in this world or the next, because they keep going from strength to strength. The next one is Rabbi Elazar's: Torah scholars increase peace in the world. The Gemara does not stop to explain how both can be true.
The Mishnah gives an example. Beit Shammai and Beit Hillel were two schools of sages who disagreed on questions of marriage and purity. The Mishnah says that even where one side called a marriage forbidden and the other allowed it, they did not avoid marrying into each other's families. That Mishnah is in tractate Yevamot, which ends with Rabbi Elazar's sentence.
The Gemara in Eruvin tells how the disagreement was settled. A heavenly voice said both sides are the words of the living God, and the law follows Beit Hillel. The reason: they were agreeable and humble, they taught Beit Shammai's opinions along with their own, and they even put Beit Shammai's words first.
A modern teacher, Rabbi Eliezer Melamed in Peninei Halakhah, uses the lulav to picture it. Its leaves grow on two opposite sides of one spine, and each overlaps the next. He says the Torah is like that: many views and disagreements, but one root and one goal. That, he writes, should push Torah scholars to increase peace and unity in the world.
So the sources do not say that scholars never argue. They show scholars who argue and still marry into each other's families, and a modern teacher who sees one root under all the views. How exactly that adds up to more peace, the Gemara does not spell out.
Berakhot 64a,Mishnah Yevamot 1:4,Eruvin 13b,Peninei Halakhah, Sukkot 4:3:4