Genesis 42:37-38

37Then Reuben said to his father, “You can kill my two sons if I don’t bring him back to you. Put him in my care, and I will return him to you.”

38But Jacob answered, “My son will not go down with you, for his brother is dead and he alone is left. If anything happens to him on your journey, you will bring my gray hairs down to Sheol in sorrow.”