They should have burned the cloak with the rest of Jericho’s goods. It came from Babylon, showing that long-distance trade was important in the ancient Near East.
two hundred shekels of silver: Achan took pieces or piles of silver that others would use as money. They did not invent actual coins until the 600s BC.
I coveted them: See the tenth commandment (Exodus 20:17). Achan’s desire for what he saw led him to steal.