Leviticus 18:17
Thou shalt not uncover the privities of the wife and her daughter also; neither shalt thou take her son's daughter or her daughter's daughter to uncover their privities: they are her next kin, it were therefore wickedness.
Leviticus 20:14
If a man take a wife and her mother thereto, it is wickedness. Men shall burn with fire both him and them, that there be no wickedness among you.
Deuteronomy 27:23
"'Cursed be he that lieth with his mother-in-law.' And all the people shall say, 'Amen.'
Amos 2:7
They tread upon poor men's heads, in the dust of the earth, and crook the ways of the meek. The son and the father go to the harlot, to dishonour my holy name,