The Lord will fight as he did at Mount Perazim and in the valley of Gibeon, in order to do what he intends to do—strange as his actions may seem. He will complete his work, his mysterious work.
But they did not drive out the Canaanites who lived in Gezer, so the Canaanites have lived among the Ephraimites to this day, but they have been forced to work as slaves.