Rabbi Akiva Said This Verse Was the Greatest Principle in Torah
Rabbi Akiva called it the greatest principle in the entire Torah. Ben Azzai disagreed, and said an even more obscure verse outranked it. Two thousand years later, the argument hasn't been settled.
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Three words in Hebrew, five in English: "Love your neighbor as yourself" (Leviticus 19:18). Rabbi Akiva, the greatest sage of the Mishnaic period, declared this the klal gadol baTorah, the greatest encompassing principle in the entire Torah. Everything else, he said, was commentary.
His student Ben Azzai immediately pushed back. He said a different verse was greater: "This is the book of the generations of Adam" (Genesis 5:1). Not a commandment about love. A genealogy.
The disagreement has never been resolved. Which is exactly how the rabbis intended it.
What Does the Verse Actually Demand?
Midrash Rabbah on Leviticus (Vayikra Rabbah, c. 400-500 CE) probes the verse from every angle. The Hebrew, ve'ahavta le'reakha kamokha (וְאָהַבְתָּ לְרֵעֲךָ כָּמוֹךָ), is more ambiguous than the standard translation suggests. The preposition le means "for" or "toward" as much as it means direct object. Rabbi Akiva read it as: desire for your neighbor the good things you would want for yourself. Not a feeling. An orientation.
The practical test the rabbis derived from it appears in the Talmud (Tractate Sanhedrin 45a, c. 500 CE): when a condemned criminal must be executed, the court is required to choose the most humane method available. The proof text is this verse. Even a criminal being put to death is your neighbor. Love him as yourself. Kill him as painlessly as possible.
Hillel the Elder, teaching a generation before Jesus was born and a generation before the destruction of the Temple, gave the most famous formulation: "What is hateful to you, do not do to your neighbor. That is the whole Torah. The rest is commentary. Go and learn" (Talmud Bavli, Tractate Shabbat 31a). He was quoting Akiva's principle but inverting it from positive to negative. The negative formulation, the rabbis noted, is actually safer, easier to fulfill, harder to violate through good intentions.
Who Is Your Neighbor?
The Hebrew re'a (רֵעַ), neighbor, is notoriously elastic. It can mean a friend, a fellow Israelite, a companion, a person nearby. Midrash Aggadah sources wrestle with the boundaries.
The Sifra (Torat Kohanim, a tannaitic midrash on Leviticus compiled c. 200-300 CE) makes a careful distinction: the commandment to love your neighbor applies to a person who behaves as a neighbor toward you, meaning, someone who fulfills their own obligations within the community. This was not a universalist reading.
But the tradition also preserved a countervailing strain. Pirkei Avot (Ethics of the Fathers, compiled c. 200 CE) contains the teaching of Ben Azzai, Akiva's challenger: he who despises any human being despises the image of God (tzelem Elohim), because every person is created in that image. If re'a means only co-religionist, Ben Azzai's verse about Adam's descendants outranks it, because Adam was the ancestor of all humanity, not just Israel. Ben Azzai's genealogy becomes a statement about universal human dignity.
Why Ben Azzai Chose a Genealogy
The move Ben Azzai makes is subtle and worth sitting with. He doesn't pick a more dramatic verse about love or justice. He picks a list of names. "This is the book of the generations of Adam. When God created man, He made him in the likeness of God" (Genesis 5:1).
Midrash Tanchuma (attributed to Rabbi Tanchuma bar Abba, c. 5th century CE) explains: the verse grounds human dignity not in behavior, not in commandment, not in covenant, but in origin. Everyone listed in that genealogy was created in the image of God. The love owed to a neighbor is not earned. It is native to the creature.
Ben Azzai was, famously, unmarried. He studied Torah his whole life and never married, which was highly unusual and earned him considerable criticism. He said the Torah was his wife. You could argue that a man who devoted himself entirely to divine study and chose not to build a family of his own had particular reason to ground ethics in something more universal than the neighbor you happen to live near.
What the Midrash Says About the Word "As Yourself"
The hardest part of the verse is the end. As yourself. Legends of the Jews and the broader midrashic tradition note a grammatical subtlety: the verse does not say "more than yourself." A person is not required to sacrifice their own life for their neighbor's comfort. The Talmud (Tractate Bava Metzia 62a) contains a stark ruling: if two people are lost in the desert and one has water, enough for one but not both, the person holding the water is not required to share it and die. Your own life comes first.
"As yourself" sets a ceiling, not a floor. The obligation is real and demanding. But it stops at the point where fulfilling it would require you to cease to exist.
The midrash on the holiness code notes that the verse immediately follows a prohibition on taking revenge or bearing a grudge (Leviticus 19:17-18). The sequence is deliberate. You don't arrive at love of neighbor by skipping past the hard work of letting go of what was done to you. The love is what remains after the grudge has been surrendered.