Genesis 42:33 in the World English Bible
The man, the lord of the land, said to us, ‘By this I will know that you are honest men: leave one of your brothers with me, and take grain for the famine of your houses, and go your way.
Context
32 We be twelve brethren, sons of our father; one is not, and the youngest is this day with our father in the land of Canaan.
33 And the man, the lord of the country, said unto us, Hereby shall I know that ye are true men; leave one of your brethren here with me, and take food for the famine of your households, and be gone:
34 And bring your youngest brother unto me: then shall I know that ye are no spies, but that ye are true men: so will I deliver you your brother, and ye shall traffick in the land.