Deuteronomy 27:23
‘Cursed is he who is intimate with his mother-in-law.’ And all the people shall say, ‘Amen.’
Leviticus 20:14
It is immoral and shameful if a man marries a woman and her mother; all three shall be burned in fire, so that there will be no immorality among you.
Leviticus 18:17
You shall not uncover the nakedness of a woman and her daughter, nor shall you take her son’s daughter or her daughter’s daughter to uncover their nakedness (have intimate relations with them); they are [her] blood relatives; it is an outrageous offense.
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