Opening their treasures (anoixantes tous thēsaurous autōn). Here “treasures” means “caskets” from the verb (tithēmi), receptacle for valuables. In the ancient writers it meant “treasury” as in 1 Maccabees 3:29. So a “storehouse” as in Mat 13:52. Then it means the things laid up in store, treasure in heaven (Mat 6:20), in Christ (Col 2:3). In their “caskets” the Magi had gold, frankincense, and myrrh, all found at that time in Arabia, though gold was found in Babylon and elsewhere.