Genesis 42:16-19

16Send one of you and have him get your brother, while you remain confined, so that your words may be tested, whether there is 1truth in you. But if not, by the life of Pharaoh, you are certainly spies!” 17So he put them all together in 2prison for three days.

18Now Joseph said to them on the third day, “Do this and live, for 3I fear God: 19if you are honest men, let one of your brothers be confined in 4your prison; but as for the rest of you, go, carry grain for the famine of your households,