Genesis 42:15-17

American Standard Version

¹⁵ hereby ye shall be proved: by the life of Pharaoh ye shall not go forth hence, except your youngest brother come hither. ¹⁶ Send one of you, and let him fetch your brother, and ye shall be bound, that your words may be proved, whether there be truth in you: or else by the life of Pharaoh surely ye are spies. ¹⁷ And he put them all together into ward three days.