American Standard Version (ASV):
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 traffic in the land.
King James Version (KJV):
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.