Genesis 42:29-34

29When they came to Jacob their father in the land of Canaan, they told him all that had happened to them, saying,

30"The man, the lord of the land, spoke roughly to us and took us to be spies of the land.

31But we said to him, 'We are honest men; we have never been spies.

32We are twelve brothers, sons of our father. One is no more, and the youngest is this day with our father in the land of Canaan.'

33Then the man, the lord of the land, said to us, 'By this I shall know that you are honest men: leave one of your brothers with me, and take grain for the famine of your households, and go your way.

34Bring your youngest brother to me. Then I shall know that you are not spies but honest men, and I will deliver your brother to you, and you shall trade in the land.'"