Genesis 42:34

And, bring your youngest brother unto me
Their brother Benjamin: then shall I know that you [are] no spies, but [that] you [are] true
[men];
he knew they were no spies now, but true, honest, upright men, with respect to any designs upon the country; but then he should own and acknowledge them to be such, having such plain proof that what they said was true: [so] will I deliver your brother;
their brother Simeon, who was left bound; though this circumstance they also here studiously conceal from their father: and ye shall traffic in the land;
not only for corn, but for any other commodity Egypt furnished its neighbours with.