Genesis 42:33

American Standard Version 2015

And the man, the lord of the land, said unto us, Hereby shall I know that ye are true men: leave one of your brethren with me, and take grain for the famine of your houses, and go your way;

Cross References

Genesis 42:15

hereby ye shall be proved: by the life of Pharaoh ye shall not go forth hence, except your youngest brother come hither.

Genesis 42:32

we are twelve brethren, sons of our father; one is not, and the youngest is this day with our father in the land of Canaan.