Genesis 35:22
35:22 While Israel was living in that land, Reuben had sexual relations with
Bilhah, his father’s concubine, and Israel heard about it.
Jacob had twelve sons:
Genesis 42:22
42:22 Reuben said to them, “Didn’t I say to you, ‘Don’t sin against the boy,’ but you wouldn’t listen? So now we must pay for shedding his blood!”