Genesis 42:19

42:19 If you are honest men, leave one of your brothers confined here in prison while the rest of you go and take grain back for your hungry families.

Genesis 42:33-34

42:33 “Then the man, the lord of the land, said to us, ‘This is how I will find out if you are honest men. Leave one of your brothers with me, and take grain for your hungry households and go. 42:34 But bring your youngest brother back to me so I will know that you are honest men and not spies. Then I will give your brother back to you and you may move about freely in the land.’”