Deuteronomy 20:17-19

New King James Version

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 ^(A)they teach you to do according to all their ^[a]abominations which they have done for their gods, and you ^(B)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.