10 "As you approach a town to attack it, you must first offer its people terms for peace. 11 If they accept your terms and open the gates to you, then all the people inside will serve you in forced labor. 12 But if they refuse to make peace and prepare to fight, you must attack the town. 13 When the Lord your God hands the town over to you, use your swords to kill every man in the town. 14 But you may keep for yourselves all the women, children, livestock, and other plunder. You may enjoy the plunder from your enemies that the Lord your God has given you. 15 "But these instructions apply only to distant towns, not to the towns of the nations in the land you will enter. 16 In those towns that the Lord your God is giving you as a special possession, destroy every living thing. 17 You must completely destroy the Hittites, Amorites, Canaanites, Perizzites, Hivites, and Jebusites, just as the Lord your God has commanded you. 18 This will prevent the people of the land from teaching you to imitate their detestable customs in the worship of their gods, which would cause you to sin deeply against the Lord your God.
Matthew Henry's Commentary on Deuteronomy 20:10-18
Commentary on Deuteronomy 20:10-12
(Read Deuteronomy 20:10-12)
The Israelites are here directed about the nations on whom they made war. Let this show God's grace in dealing with sinners. He proclaims peace, and beseeches them to be reconciled. Let it also show us our duty in dealing with our brethren. Whoever are for war, we must be for peace. Of the cities given to Israel, none of their inhabitants must be left. Since it could not be expected that they should be cured of their idolatry, they would hurt Israel. These regulations are not the rules of our conduct, but Christ's law of love. The horrors of war must fill the feeling heart with anguish upon every recollection; and are proofs of the wickedness of man, the power of Satan, and the just vengeance of God, who thus scourges a guilty world. But how dreadful their case who are engaged in unequal conflict with their Maker, who will not submit to render him the easy tribute of worship and praise! Certain ruin awaits them. Let neither the number nor the power of the enemies of our souls dismay us; nor let even our own weakness cause us to tremble or to faint. The Lord will save us; but in this war let none engage whose hearts are fond of the world, or afraid of the cross and the conflict. Care is here taken that in besieging cities the fruit-trees should not be destroyed. God is a better friend to man than he is to himself; and God's law consults our interests and comforts; while our own appetites and passions, which we indulge, are enemies to our welfare. Many of the Divine precepts restrain us from destroying that which is for our life and food. The Jews understand this as forbidding all wilful waste upon any account whatsoever. Every creature of God is good; as nothing is to be refused, so nothing is to be abused. We may live to want what we carelessly waste.