so Sarai said to Abram, “Please listen to me. The Lord hasn't let me have any children. So please go and sleep with my slave. Maybe I can have a family through her.” Abram agreed to what Sarai had suggested.
So she went to Abraham and told him, “You have to get rid of this slave woman and this son of hers! A slave woman's son is not going to be one of your heirs and inherit together with my son Isaac!”
During the time he was living there, Reuben went and slept with Bilhah, his father's concubine, and Israel found out about it. These were the twelve sons of Jacob:
This is what the Lord says: ‘I'm going to bring disaster on you from your own family. I will take your wives before your very eyes and give them to someone else, and he will sleep openly with your wives where everyone can see.