Bede

And the Philistines were afraid, saying, "God has come into the camp," etc. The pagans were afraid, recognizing the coming of the true God into the world, to fortify the spiritual camps of the faithful; and the worshippers of many and false gods groaned together with their destroyed cults, and they mutually strengthened one another wickedly to battle against the ranks of faith and truth. For there was not so much exultation yesterday and the day before. …

Commentary on Samuel ↗