Mishneh Torah, Negative Mitzvot 1-122

Hook

It seems simple enough: "Do not add to it and do not detract from it." But how, then, do we account for the myriad Rabbinic commandments that shape Jewish life?

Context

The Rambam (Rabbi Moshe ben Maimon, Maimonides) undertook the monumental task of codifying all Jewish law in his Mishneh Torah. This excerpt comes from the introduction to his listing of the 365 Negative Commandments, where he addresses the fundamental question of Rabbinic authority.

Text Snapshot

"Not to add to the mitzvot of the Torah... as [Deuteronomy 13:1] states: 'Carefully observe everything which I command you to do. Do not add to it.'... However, if a court, together with the prophet of that age, adds a commandment as an ordinance, a lesson, or as a decree, this is not considered as an addition." (Mishneh Torah, Negative Mitzvot 1-122, Sefaria URL: https://www.sefaria.org/Mishneh_Torah%2C_Negative_Mitzvot_1-122)

Close Reading

Insight 1: Structural Distinction

Rambam meticulously lists divine negative commandments first. But then, he pivots to a crucial discussion on Rabbinic (derabanan) enactments. This structural shift highlights that even within a work dedicated to Torah law, the framework for understanding Rabbinic authority is paramount.

Insight 2: Redefining "Adding"

The core insight here is Rambam's precise definition of what constitutes "adding" to the Torah. It's not about creating new practices. Rather, it's specifically about a prophet or court falsely claiming that God Himself commanded a new mitzvah to be added to the Torah's 613.

Insight 3: The Source of Rabbinic Authority

Rambam resolves the tension by pointing to a different Torah verse (Deuteronomy 17:11): "Do not deviate from the instructions that they will give you, left or right." This verse itself grants the Sages the authority to institute ordinances and decrees, making them not additions to the Torah, but rather, an expression of a Torah mandate.

Two Angles

The passage contrasts two classic understandings:

1. Intuitive Reading: The straightforward interpretation of "do not add" as an absolute prohibition against any new religious practice or law. This reading would seem to delegitimize all Rabbinic enactments.
2. Rambam's Halakhic Reading: Rambam clarifies that the prohibition is against attributing a new command directly to God as part of the Mosaic revelation. Rabbinic ordinances, like reading Megillah or lighting Chanukah candles, are explicitly understood as human enactments by a court, deriving their authority from the Torah's command to listen to the Sages (Deuteronomy 17:11).

Practice Implication

This distinction is foundational. It means that while Rabbinic laws are binding, their nature is different from Torah laws. They are not divine additions, but rather human expressions of divine authority, designed to "recall the praise of the Holy One... and His response to our cries."

Chevruta Mini

1. If Rabbinic laws derive their authority from a Torah command, does that make them de facto Torah laws, or does the distinction still matter? What are the practical implications?
2. What risks does Rambam's careful distinction mitigate within the evolving practice of Judaism?

Takeaway

Rabbinic commandments are not additions to Torah, but rather expressions of Torah-mandated authority, ensuring the vitality of Jewish law through changing times.