Deuteronomy 27:20

“Uncontrolled as water, you shall not have preeminence, Because you went up to your father’s bed; Then you defiled it—he went up to my couch.

‘You shall not uncover the nakedness of your father, that is, the nakedness of your mother. She is your mother; you are not to uncover her nakedness.

‘You shall not uncover the nakedness of your father’s wife; it is your father’s nakedness.

‘If there is a man who lies with his father’s wife, he has uncovered his father’s nakedness; both of them shall surely be put to death. Their bloodguiltiness is upon them.

“A man shall not take his father’s wife so that he will not uncover his father’s skirt.

“Indeed all Israel has trespassed against Your law, even turning aside, not listening to Your voice; so the curse has been poured out on us, along with the oath which is written in the law of Moses the servant of God, for we have sinned against Him.

It is actually reported that there is sexual immorality among you, and sexual immorality of such a kind as does not exist even among the Gentiles, that someone has his father’s wife.

Otherwise if you bless in the spirit only, how will the one who fills the place of the uninformed say the “Amen” at your giving of thanks, since he does not know what you are saying?