Deuteronomy 17:7

3 and going to worship other gods, bowing down to them or to the sun or moon or any of the host of heaven—which I have forbidden—

4 and if it is reported and you hear about it, you must investigate it thoroughly. If the report is true and such an abomination has happened in Israel,

5 you must bring out to your gates the man or woman who has done this evil thing, and you must stone that person to death.

6 On the testimony of two or three witnesses a man shall be put to death, but he shall not be executed on the testimony of a lone witness.

7 The hands of the witnesses shall be the first in putting him to death, and after that, the hands of all the people. So you must purge the evil from among you.

8 If a case is too difficult for you to judge, whether the controversy within your gates is regarding bloodshed, lawsuits, or assaults, you must go up to the place the LORD your God will choose.

9 You are to go to the Levitical priests and to the judge who presides at that time. Inquire of them, and they will give you a verdict in the case.

10 You must abide by the verdict they give you at the place the LORD will choose. Be careful to do everything they instruct you,

11 according to the terms of law they give and the verdict they proclaim. Do not turn aside to the right or to the left from the decision they declare to you.

Read all of Deuteronomy 17