Phinehas and the clan leaders were pleased when they heard the tribes of Reuben, Gad, and East Manasseh explain why they had built the altar. Then Phinehas told them, "Today we know that the LORD is helping us. You have not been unfaithful to him, and this means that the LORD will not be angry with us."
The Canaanites, the Hittites, the Hivites, the Perizzites, the Girgashites, the Amorites, and the Jebusites control the land on the other side of the river. But the living God will be with you and will force them out of the land when you attack. And now, God is going to prove that he's powerful enough to force them out.