John Gill Commentary Deuteronomy 7:1

"When Jehovah thy God shall bring thee into the land whither thou goest to possess it, and shall cast out many nations before thee, the Hittite, and the Girgashite, and the Amorite, and the Canaanite, and the Perizzite, and the Hivite, and the Jebusite, seven nations greater and mightier than thou;" — Deuteronomy 7:1 (ASV)

When the Lord your God shall bring you into the land where you go to possess it. The land of Canaan they were just now going into to take possession of; their introduction into which is here, as in many other places, ascribed not to themselves, or their leaders, but to the Lord as their covenant God:

and has cast out many nations before you; even all that were in it, the seven following:

the Hittites, and the Girgashites, and the Amorites, and the Canaanites, and the Perizzites, and the Hivites, and the Jebusites; the Canaanites were a particular nation in the land of Canaan, which had their name from Canaan himself; the rest were called from different sons of his; see (Genesis 10:15–17), the country of the Gergesenes, the same with the Girgashites, continued its name until the times of Christ, (Matthew 8:28),

seven nations greater and mightier than you; more in number, and more robust in body, some being of a gigantic stature; there were ten of these nations in Abraham's time, three of them were since sunk or swallowed up among the rest, the Kenites, and Kenizzites, and the Rephaim; for instead of the Kadmonites the Hivites are here put, which seem to be the same.