Bible Verses About Reuben: Commits incest with one of his father's concubines, and, in consequence, forfeits the birthright

And when he dwelt in that country, Ruben went, and slept with Bala the concubine of his father: which he was not ignorant of. Now the sons of Jacob were twelve.

Thou art poured out as water, grow thou not; because thou wentest up to thy father's bed, and didst defile his couch.

Now the sons of Ruben the firstborn of Israel, (for he was his firstborn: but forasmuch as he defiled his father's bed, his first birthright was given to the sons of Joseph the son of Israel, and he was not accounted for the firstborn.