Genesis 42:10-20

10 "No, my lord,"they replied, "your servants have come to buy food.
11 We're all the sons of one man, we're upright men; your servants aren't spies."
12 "No," he said to them, "you've come to spy out our country's weaknesses."
13 They said, "We, your servants, are twelve brothers, the sons of one man in the land of Kena'an; the youngest stayed with our father, and another one is gone."
14 "Just as I said,"replied Yosef, "you're spies!
15 Here's how you can prove you're not lying: as Pharaoh lives, you will not leave here unless your youngest brother comes here.
16 Send one of you, and let him bring your brother. Meanwhile, you will be kept in custody. This will prove whether there is any truth in what you say. Otherwise, as Pharaoh lives, you are certainly spies."
17 Then he put all of them together in prison for three days.
18 On the third day, Yosef said to them, "Do what I say, and stay alive, for I fear God.
19 If you are upright men, let one of your brothers remain incarcerated in the prison you're being kept in, while you go and carry grain back to relieve the famine in your homes.
20 But bring your youngest brother to me. In this way your statements will be verified, and you won't die." So they did it.
Complete Jewish Bible Copyright 1998 by David H. Stern. Published by Jewish New Testament Publications, Inc. All rights reserved. Used by permission.