Genesis 42:17-22

17And he put them in custody three days.

18And Joseph said to them the third day, This do, that ye may live: I fear 1God.

19If ye are honest, let one of your brethren remain bound in the house of your prison, but go ye, carry grain for the hunger of your households;

20and bring your youngest brother to me, in order that your words be verified, and that ye may not die. And they did so.

21Then they said one to another, We are indeed guilty concerning our brother, whose anguish of soul we saw when he besought us, and we did not hearken; therefore this distress is come upon us.

22And Reuben answered them, saying, Did I not speak to you, saying, Do not sin against the lad? But ye did not hearken; and now behold, his blood also is required.