Deuteronomy 20:18

American Standard Version

that they teach you not to do after all their abominations, which they have done unto their gods; so would ye sin against Jehovah your God.

Deuteronomy 20:18 in other translations

that they not teach you to follow all their abominations, which they have done for their gods; so would you sin against Yahweh your God.

16But of the cities of these peoples, that Jehovah thy God giveth thee for an inheritance, thou shalt save alive nothing that breatheth;
17but thou shalt utterly destroy them: the Hittite, and the Amorite, the Canaanite, and the Perizzite, the Hivite, and the Jebusite; as Jehovah thy God hath commanded thee;
18that they teach you not to do after all their abominations, which they have done unto their gods; so would ye sin against Jehovah your God.
19When thou shalt besiege a city a long time, in making war against it to take it, thou shalt not destroy the trees thereof by wielding an axe against them; for thou mayest eat of them, and thou shalt not cut them down; for is the tree of the field man, that it should be besieged of thee?
20Only the trees of which thou knowest that they are not trees for food, thou shalt destroy and cut them down; and thou shalt build bulwarks against the city that maketh war with thee, until it fall.