The sons of Reuben the firstborn of Israel—he was the firstborn, but when he defiled his father’s bed, his birthright was given to the sons of Joseph son of Israel—so he is not reckoned as the firstborn in the genealogical record.
“If a man lies with his father’s wife, and has uncovered his father’s nakedness, both of them should surely be put to death, and their blood should be on them.
They trample the head of the poor into the dust of the earth and thwart the way of the humble. A man and his father go to the same girl, to profane My holy Name.
It is actually reported that among you there is sexual immorality, and such immorality as is not even among the pagans—that someone has his father’s wife.