For the ships of Chittim shall come against him: therefore he shall be grieved, and return, and have indignation against the holy covenant: so shall he do; he shall even return, and have intelligence with them that forsake the holy covenant.

Ships of Kittim will come against him, and he will lose heart. Then he will turn back and rage against the holy covenant and do damage. So he will return and show favor to those who forsake the holy covenant.