Burn them; viz. the temples. Egypt was full of gorgeous and imposing temples, which could not, however, always be burned, nor were the conquerors of Egypt anxious to display hostility to Egyptian religion.
Carry them away captives; viz. the idol gods (comp. Jeremiah 48:7, "Chemosh shall no forth into captivity:" and Isaiah 46:2, "Their soul [or, 'personality'] hath gone into captivity"). The prophet speaks from the point of view of a believer in the idol gods.
He shall array himself with the land of Egypt, etc. (For "array himself with" and "putteth on,"read wrap himself in and wrappeth himself in.) Ewald well explains this figure. "As easily as the shepherd in the open field wraps himself in the cool night in his mantle, will he be able to grasp Egypt with his hand and fling it round him like an easily managed garment, in order then to leave the land as an absolute conqueror, clothed in this attire of booty, in peace, without an enemy."