Noahide Laws

§ Since the halakhot of the descendants of Noah have been mentioned, a full discussion of the Noahide mitzvot is presented. The Sages taught in a baraita: The descendants of Noah, i.e., all of humanity, were commanded to observe seven mitzvot: The mitzva of establishing courts of judgment; and the prohibition against blessing, i.e., cursing, the name of God; and the prohibition of idol worship; and the prohibition against forbidden sexual relations; and the prohibition of bloodshed; and the prohibition of robbery; and the prohibition against eating a limb from a living animal.

Rabbi Ḥananya ben Gamla says: The descendants of Noah are also commanded concerning the prohibition against consuming the blood from a living animal. Rabbi Ḥideka says: They are also commanded concerning castration, i.e., they are prohibited to castrate any living animal. Rabbi Shimon says: They are also commanded concerning the prohibition against engaging in sorcery.

Rabbi Yosei says: With regard to every type of sorcery that is stated in the passage about sorcery, it is prohibited for a descendant of Noah to engage in it. This is derived from the verses: “When you come into the land that the Lord your God gives you, you shall not learn to do like the abominations of those nations. There shall not be found among you one who makes his son or his daughter pass through the fire, a diviner, a soothsayer, or an enchanter, or a warlock, or a charmer, or one who consults a necromancer and a sorcerer, or directs inquiries to the dead. For whoever does these things is an abomination to the Lord; and because of these abominations, the Lord your God is driving them out from before you” (Deuteronomy 18:9–12). Evidently, the Canaanites were punished for these practices; and since God would not have punished them for an action unless He first prohibited it, these practices are clearly prohibited to gentiles.

Rabbi Elazar says: The descendants of Noah were also commanded concerning the prohibition of diverse kinds. Nevertheless, it is permitted for the descendants of Noah to wear diverse kinds of wool and linen and to sow diverse kinds of seeds together, and they are prohibited only with regard to breeding diverse species of animals and grafting diverse species of trees.

The verse is interpreted homiletically as follows: With regard to the term “and…commanded,” these are the courts of judgment; and so it states in another verse: “For I have known him, to the end that he may command his children and his household after him, that they may keep the way of the Lord, to do righteousness and justice” (Genesis 18:19).

§ The Gemara asks: From where are these matters, the Noahide mitzvot, derived? Rabbi Yoḥanan says: It is from that which the verse states: “And the Lord God commanded the man, saying: Of every tree of the garden you may freely eat; but from the tree of the knowledge of good and evil, you shall not eat from it, for on the day that you eat from it, you shall die” (Genesis 2:16–17).

§ The Gemara asks: From where are these matters, the Noahide mitzvot, derived? Rabbi Yoḥanan says: It is from that which the verse states: “And the Lord God commanded the man, saying: Of every tree of the garden you may freely eat; but from the tree of the knowledge of good and evil, you shall not eat from it, for on the day that you eat from it, you shall die” (Genesis 2:16–17).

With regard to the term “saying,” this alludes to forbidden sexual relations; and so it states: “Saying, if a man sends his wife, and she goes from him and becomes another man’s…will that land not be greatly polluted? But you have played the harlot with many lovers” (Jeremiah 3:1). “Of every tree of the garden” alludes to the fact that one may partake only of items that are permitted to him, as they belong to him, and he may not partake of stolen items. “You may freely eat” alludes to the fact that one may eat fruit, but not a limb from a living animal.

With regard to the term “saying,” this alludes to forbidden sexual relations; and so it states: “Saying, if a man sends his wife, and she goes from him and becomes another man’s…will that land not be greatly polluted? But you have played the harlot with many lovers” (Jeremiah 3:1). “Of every tree of the garden” alludes to the fact that one may partake only of items that are permitted to him, as they belong to him, and he may not partake of stolen items. “You may freely eat” alludes to the fact that one may eat fruit, but not a limb from a living animal.

With regard to the term “the Lord,” this alludes to blessing the name of God; and so it states in another verse: “And he who blasphemes the name of the Lord…shall be put to death” (Leviticus 24:16). “God,” this alludes to idol worship; and so it states: “You shall have no other gods before Me” (Exodus 20:2). “The man,” this alludes to bloodshed; and so it states: “One who sheds the blood of man, by man his blood shall be shed” (Genesis 9:6).