71 When Yahweh your God shall bring you into the land where you go to possess it, and shall cast out many nations before you, 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 you; 2 and when Yahweh your God shall deliver them up before you, and you shall strike them; then you shall utterly destroy them: you shall make no covenant with them, nor show mercy to them; 3 neither shall you make marriages with them; your daughter you shall not give to his son, nor shall you take his daughter for your son. 4 For he will turn away your son from following me, that they may serve other gods: so the anger of Yahweh would be kindled against you, and he would destroy you quickly.
Matthew Henry's Commentary on Deuteronomy 7:1-4
Commentary on Deuteronomy 7:1-11
(Read Deuteronomy 7:1-11)
Here is a strict caution against all friendship and fellowship with idols and idolaters. Those who are in communion with God, must have no communication with the unfruitful works of darkness. Limiting the orders to destroy, to the nations here mentioned, plainly shows that after ages were not to draw this into a precedent. A proper understanding of the evil of sin, and of the mystery of a crucified Saviour, will enable us to perceive the justice of God in all his punishments, temporal and eternal. We must deal decidedly with our lusts that war against our souls; let us not show them any mercy, but mortify, and crucify, and utterly destroy them. Thousands in the world that now is, have been undone by ungodly marriages; for there is more likelihood that the good will be perverted, than that the bad will be converted. Those who, in choosing yoke-fellows, keep not within the bounds of a profession of religion, cannot promise themselves helps meet for them.