But I will strengthen the arms of the king of Babylon,.... Which is repeated for the sake of confirmation:
and the arms of Pharaoh shall fall down: as when a man's arms are broken; and he shall not be able to lift them up and defend himself:
and they shall know that I am the Lord; namely, the Egyptians, as in
when I shall have put my sword into the hand of the king of Babylon, and he shall stretch it out on the land of Egypt; that is, when he shall have a commission to carry the war into Egypt; and he shall spread desolation over all the land, cutting off the inhabitants of it everywhere, as before described in this chapter.