Genesis 42:16 in the King James Version
Send one of you, and let him fetch your brother, and ye shall be kept in prison, that your words may be proved, whether there be any truth in you: or else by the life of Pharaoh surely ye are spies.
Context
15 By this you shall be tested. By the life of Pharaoh, you shall not go out from here, unless your youngest brother comes here.
16 Send one of you, and let him get your brother, and you shall be bound, that your words may be tested, whether there is truth in you, or else by the life of Pharaoh surely you are spies.”
17 He put them all together into custody for three days.