Charles Ellicott 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 thy God shall bring thee into the land... —The former chapter applies the Decalogue to the love of Jehovah and of His word, and to faith in Him as the God of Israel; and thus it may be regarded as an expansion of the first commandment. The exhortation in this chapter concerns the treatment of idolaters in the conquest of Canaan, and the avoidance of all such dealings or union with them as might tend to turn Israel from Jehovah. Obviously, this may be connected both with the first and with the second commandment.