Genesis 47:17

Gen 47:17 And they brought their cattle unto Joseph: and Joseph gave them bread [in exchange] for horses, and for the flocks, and for the cattle of the herds, and for the asses: and he fed them with bread for all their cattle for that year.

Ver. 17. And Joseph gave them bread in exchange, ] An ancient and yet usual way of traffic, with savages and barbarians especially; as in Virginia, &c., where they usually change, as Glaueus did with Diomedes, χρυσεα χαλκειων . a

a Homeri Ilias, lib. vi.