John Gills Exposition of the Bible Commentary - Leviticus 18:9
The nakedness of thy sister ,.... To lie with one in so near a relation is exceeding criminal, and for which the law curses a man, Deuteronomy 27:22 ; and to marry her is not lawful; for though it was necessary for the propagation of mankind that a man should marry his sister, for who else could Cain and Abel marry? yet afterwards, when there was an increase of mankind, and there were people enough remote from each other, it became unlawful for persons in such near ties of consanguinity to... read more
John Gills Exposition of the Bible Commentary - Leviticus 18:8
The nakedness of thy father's wife shalt thou not uncover ,.... That is, who is indeed a man's father's wife, but not his own mother, but a stepmother or mother-in-law; or otherwise this law would coincide with the former; a man lying with such an one is accursed by the law, Deuteronomy 27:23 ; such an incestuous copulation was that of Reuben with Bilhah, and Absalom with his father's concubines or secondary wives, and such an incestuous marriage was that of the Corinthians, 1 Corinthians... read more