Many social and legal phenomena described in Sefer Bereishit conform to what we know today about the laws and practices of various peoples in the ancient Near East – even though the Torah, given at a later time, explicitly forbade some of these practices. The presentation of the forefathers as people who were active within a socio-legal framework that partly contravened the Torah, proves the familiarity of Sefer Bereishit with the world within which its characters functioned. It is also testimony to the authenticity and honesty of the biblical account, which makes no pretense of presenting the forefathers as operating in accordance with the laws of the Torah, which came later.

Courtesy of the Virtual Beit Midrash, Yeshivat Har Etzion