Biblical Marriage Double-Standard; “ ‘Do not have sexual relations with your sister,
either your father’s daughter or your mother’s daughter,
whether she was born in the same home or elsewhere."
Leviticus 18:9; “ ‘If a man marries his sister, the daughter of either his father or his mother,
and they have sexual relations, it is a disgrace.
They are to be publicly removed from their people.
He has dishonored his sister and will be held responsible."
Leviticus 10:17; "Abraham replied, “I said to myself,
‘There is surely no fear of God in this place,
and they will kill me because of my wife.’
Besides, she really is my sister, the daughter of my father
though not of my mother; and she became my wife."
Genesis 20: 11,12