Genesis 42:37 in the King James Version
And Reuben spake unto his father, saying, Slay my two sons, if I bring him not to thee: deliver him into my hand, and I will bring him to thee again.
Context
36 Jacob, their father, said to them, “You have bereaved me of my children! Joseph is no more, Simeon is no more, and you want to take Benjamin away. All these things are against me.”
37 Reuben spoke to his father, saying, “Kill my two sons, if I don’t bring him to you. Entrust him to my care, and I will bring him to you again.”
38 He said, “My son shall not go down with you; for his brother is dead, and he only is left. If harm happens to him along the way in which you go, then you will bring down my gray hairs with sorrow to Sheol.”