Genesis 42:17-19 Amplified Bible (AMP)

17. Then he put them all in custody for three days.

18. And Joseph said to them on the third day, Do this and live! I reverence and fear God.

19. If you are true men, let one of your brothers be bound in your prison, but [the rest of] you go and carry grain for those weakened with hunger in your households.

Genesis 42