Genesis 42:37

32 we are twelve brethren, sons of our father; one is not, and the youngest is this day with our father in the land of Canaan.

33 And the man, the lord of the land, said unto us, Hereby shall I know that ye are true men: leave one of your brethren with me, and take [grain for] the famine of your houses, and go your way;

34 and bring your youngest brother unto me: then shall I know that ye are no spies, but that ye are true men: so will I deliver you your brother, and ye shall traffic in the land.

35 And it came to pass as they emptied their sacks, that, behold, every man`s bundle of money was in his sack: and when they and their father saw their bundles of money, they were afraid.

36 And Jacob their father said unto them, Me have ye bereaved of my children: Joseph is not, and Simeon is not, and ye will take Benjamin away: all these things are against me.

37 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.

38 And he said, My son shall not go down with you; for his brother is dead, and he only is left: if harm befall him by the way in which ye go, then will ye bring down my gray hairs with sorrow to Sheol.