While Israel was living in that land, Reuben had sexual relations with Bilhah, his father’s concubine, and Israel heard about it. Jacob had twelve sons:
If a man has sexual intercourse with his father’s wife, he has exposed his father’s nakedness. Both of them must be put to death; their blood guilt is on themselves.
They trample on the dirt-covered heads of the poor; they push the destitute away. A man and his father go to the same girl; in this way they show disrespect for my moral purity.
It is actually reported that sexual immorality exists among you, the kind of immorality that is not permitted even among the Gentiles, so that someone is cohabiting with his father’s wife.