Deuteronomy 20:15-19

¹⁵Thus shall you do to all the cities that are very far off from you, not being of the cities of these nations which the Lord your God gives you to inherit their land.

¹⁶Of these you° shall not take any thing alive;

¹⁷but you° shall surely curse them, the Chettite, and the Amorite, and the Chananite, and the Pherezite, and the Evite, and the Jebusite, and the Gergesite; as the Lord your God commanded you:

¹⁸that they may not teach you to do all their abominations, which they did to their gods, and so you° should sin before the Lord your God.

¹⁹And if you should besiege a city many days to prevail against it by war to take it, you shall not destroy its trees, by applying an iron tool to them, but you shall eat of it, and shall not cut it down: Is the tree that is in the field a man, to enter before you into the work of the siege?