Genesis 42:19 in the World English Bible
If you are honest men, then let one of your brothers be bound in your prison; but you go, carry grain for the famine of your houses.
Context
18 And Joseph said unto them the third day, This do, and live; for I fear God:
19 If ye be true men, let one of your brethren be bound in the house of your prison: go ye, carry corn for the famine of your houses:
20 But bring your youngest brother unto me; so shall your words be verified, and ye shall not die. And they did so.