R. Nissim of Marseilles

In the 14^th century, R. Nissim of Marseilles suggested that God told Moses only the general command for the Tabernacle and the laws in the Torah, and Moses himself wrote the details and attributed them to God as a way of glorifying God. A close look at many passages in Deuteronomy suggests that this was an early conception of Moses’ role in commanding the mitzvot.

Although incest taboos are found in the majority of cultures, medieval Jewish thinkers found this to be an insufficient explanation for the Torah’s prohibitions.