Genesis 42:30-34

The man, who is the lord of the land, spake roughly to us, and took us for spies of the country.

And we said unto him, We are true men; we are no spies:

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.

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:

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.