Genesis:42:16-19
kjv@Genesis:42:16 @ 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.
kjv@Genesis:42:17 @ And he put them all together into ward three days.
kjv@Genesis:42:18 @ And Joseph said unto them the third day, This do, and live; for I fear God:
kjv@Genesis:42:19 @ 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: