12:27. And shalt offer thy oblations, the flesh and the blood upon the altar of the Lord thy God: the blood of thy victims thou shalt pour on the altar: and the flesh thou thyself shalt eat.
12:28. Observe and hear all the things that I command thee, that it may be well with thee and thy children after thee for ever, when thou shalt do what is good and pleasing in the sight of the Lord thy God.
12:29. When the Lord thy God shall have destroyed before thy face the nations, which thou shalt go in to possess, and when thou shalt possess them, and dwell in their land:
12:30. Beware lest thou imitate them, after they are destroyed at thy coming in, and lest thou seek after their ceremonies, saying: As these nations have worshipped their gods, so will I also worship.
12:31. Thou shalt not do in like manner to the Lord thy God. For they have done to their gods all the abominations which the Lord abhorreth, offering their sons and daughters, and burning them with fire.
12:32. What I command thee, that only do thou to the Lord: neither add any thing, nor diminish.
That only do thou, etc.... They are forbid here to follow the ceremonies of the heathens; or to make any alterations in the divine ordinances.
Deuteronomy Chapter 13
False prophets must be slain, and idolatrous cities destroyed.
13:1. If there rise in the midst of thee a prophet or one that saith he hath dreamed a dream, and he foretell a sign and a wonder,