New King James Version (NKJV)
Deuteronomy 20
14 But the women, the little ones, the livestock, and all that is in the city, all its spoil, you shall plunder for yourself; and you shall eat the enemies’ plunder which the Lord your God gives you.
15 Thus you shall do to all the cities which are very far from you, which are not of the cities of these nations.
16 But of the cities of these peoples which the Lord your God gives you as an inheritance, you shall let nothing that breathes remain alive,
17 but you shall utterly destroy them: the Hittite and the Amorite and the Canaanite and the Perizzite and the Hivite and the Jebusite, just as the Lord your God has commanded you,
18 lest they teach you to do according to all their abominations which they have done for their gods, and you sin against the Lord your God.
19 "When you besiege a city for a long time, while making war against it to take it, you shall not destroy its trees by wielding an ax against them; if you can eat of them, do not cut them down to use in the siege, for the tree of the field is man’s food.
20 Only the trees which you know are not trees for food you may destroy and cut down, to build siegeworks against the city that makes war with you, until it is subdued.
Deuteronomy 21
1 "If anyone is found slain, lying in the field in the land which the Lord your God is giving you to possess, and it is not known who killed him,
2 then your elders and your judges shall go out and measure the distance from the slain man to the surrounding cities.
3 And it shall be that the elders of the city nearest to the slain man will take a heifer which has not been worked and which has not pulled with a yoke.
4 The elders of that city shall bring the heifer down to a valley with flowing water, which is neither plowed nor sown, and they shall break the heifer’s neck there in the valley.