Deuteronomy 13:6-10

Someone else may say to you, “Let's worship other gods.” That person may be your best friend, your brother or sister, your son or daughter, or your own dear wife or husband. But you must not listen to people who say such things. Instead, you must stone them to death. You must be the first to throw the stones, then others from the community will finish the job. Don't show any pity. The gods worshiped by other nations have never done anything for you or your ancestors. People who ask you to worship other gods are trying to get you to stop worshiping the LORD, who rescued you from slavery in Egypt. So put to death anyone who asks you to worship another god.