Genesis 42:15

He said to them, “No, but you have come to see the nakedness of the land!”

They said, “We, your servants, are twelve brothers, the sons of one man in the land of Canaan; and behold, the youngest is today with our father, and one is no more.”

Joseph said to them, “It is like I told you, saying, ‘You are spies!’

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.”

He put them all together into custody for three days.

Joseph said to them the third day, “Do this, and live, for I fear God.