(2.) Their cause shall be pleaded against their enemies (v. 3): Then, when God has made use of these nations as a scourge to his people, he shall go forth and fight against them by his judgments, as when he fought against the enemies of his church formerly in the day of battle, with the Egyptians, Canaanites, and others. Note, The instruments of God's wrath will themselves be made the objects of it; for it will come to their turn to drink of the cup of trembling; and whom God fights against he will be sure to overcome and be too hard for. And every former day of battle, which God has made to his people a day of triumph, as it is an engagement to God to appear for his people, because he is the same, so it is an encouragement to them to trust in him. It is observable that the Roman empire never flourished, after the destruction of Jerusalem as it had done before, but in many instances God fought against it.