Deuteronomy 17:2-6 New King James Version (NKJV)

² “If there is found among you, within any of your ^[a]gates which the Lord your God gives you, a man or a woman who has been wicked in the sight of the Lord your God, in transgressing His covenant, ³ who has gone and served other gods and worshiped them, either the sun or moon or any of the host of heaven, which I have not commanded, ⁴ and it is told you, and you hear of it, then you shall inquire diligently. And if it is indeed true and certain that such an ^[b]abomination has been committed in Israel, ⁵ then you shall bring out to your gates that man or woman who has committed that wicked thing, and shall stone to death that man or woman with stones. ⁶ Whoever is deserving of death shall be put to death on the testimony of two or three witnesses; he shall not be put to death on the testimony of one witness.