Numbers 15:29-30

29The same rule is for the Israelites and for all the foreign people who live among them. That is when it was a mistake.

30But a person might do something that he knows to be wrong. He does it because he wants to do it. That person is as bad as someone who insults the Lord. It does not matter whether he is an Israelite or a foreign person. You must make that person separate from all the people.