Genesis 42:7-20

7And when Joseph saw his brothers, he recognized them, but he treated them as strangers and spoke harshly to them. “Where have you come from?” he asked.

“From the land of Canaan,” they replied. “We are here to buy food.”

8Although Joseph recognized his brothers, they did not recognize him. 9Joseph remembered his dreams about them and said, “You are spies! You have come to see if our land is vulnerable.”

10“Not so, my lord,” they replied. “Your servants have come to buy food. 11We are all sons of one man. Your servants are honest men, not spies.”

12“No,” he told them. “You have come to see if our land is vulnerable.”

13But they answered, “Your servants are twelve brothers, the sons of one man in the land of Canaan. The youngest is now with our father, and one is no more.”

14Then Joseph declared, “Just as I said, you are spies! 15And this is how you will be tested: As surely as Pharaoh lives, you shall not leave this place unless your youngest brother comes here. 16Send one of your number to get your brother; the rest of you will be confined so that the truth of your words may be tested. If they are untrue, then as surely as Pharaoh lives, you are spies!”

17So Joseph imprisoned them for three days, 18and on the third day he said to them, “I fear God. So do this and you will live: 19If you are honest, leave one of your brothers in custody while the rest of you go and take back grain to relieve the hunger of your households. 20Then bring your youngest brother to me so that your words can be verified, that you may not die.”

And to this they consented.