It happened, while Yisra'el lived in that land, that Re'uven went and lay with Bilhah, his father's concubine, and Yisra'el heard of it. Now the sons of Ya`akov were twelve.
The sons of Re'uven the firstborn of Yisra'el (for he was the firstborn; but, because he defiled his father's couch, his birthright was given to the sons of Yosef the son of Yisra'el; and the genealogy is not to be reckoned after the birthright.
The man who lies with his father's wife has uncovered his father's nakedness: both of them shall surely be put to death; their blood shall be upon them.
They trample on the dust of the earth on the head of the poor, and deny justice to the oppressed; and a man and his father use the same maiden, to profane my holy name;
It is actually reported that there is sexual immorality among you, and such sexual immorality as is not even named among the Gentiles, that one has his father's wife.