Niddah

Why did Laban accept that Rachel could not rise before him when she said, “For the way of women was upon me”? Why does the Torah forbid sexual relations during menstruation? Nahmanides’ answers place him at the crossroads of medieval science and mysticism.

Leviticus 15 describes two types of impure bleeding for women: menstruation (niddah), and bleeding that is “not during her menstrual period (zavah).” The Rabbis attempt to define the difference in an abstract manner, and in so doing, elide the two.

Leviticus 15:24 does not declare sex with a menstruating woman to be forbidden, only that it results in temporary impurity. Leviticus 18:19 and 20:18, however, strictly prohibit it. What accounts for these two different approaches?

In Leviticus 15, the laws of niddah are about purity; Lev 18 and 20, however, prohibit sex during menstruation. The rabbis, who inherited both of these texts, create a new, hybrid concept: the prohibition of sex while a woman has the status of menstrual impurity.

A rejoinder to Rabbi Dr. Zev Farber’s “The Purification of a Niddah: The Torah Requirement.”

The Archaeological and Textual Evidence 

In reference to the parturient, the Torah speaks of a 33 or 66 day period of דמי טהרה “blood of her purity” as distinguished from a 7 or 14 day period “like menstruation.” What is the difference between these two periods according to Leviticus and how did later groups such as rabbinic Jews, Karaites, Samaritans, and Beta Israel understand it?

Jewish law requires a menstruant woman to purify herself by immersing in water. A schematic look at Leviticus 15 actually implies this is not a Torah requirement.

How do the laws of Leviticus 18 compare to the laws and practices of the Babylonians, Hittites, and Egyptians, and to the rest of the Bible?

Immersing in the Priestly Text: In support of Dr. Rabbi Zev Farber's contention in “The Purification of a Niddah: The Torah Requirement” that the Torah does not require women to immerse after niddah in order to become pure.