17. Then the Lord told me:Moses, they have said the right thing.
18. So when I want to speak to them, I will choose one of them to be a prophet like you. I will give my message to that prophet, who will tell the people exactly what I have said.
19. Since the message comes from me, anyone who doesn't obey the message will have to answer to me.
20. But if I haven't spoken, and a prophet claims to have a message from me, you must kill that prophet, and you must also kill any prophet who claims to have a message from another god.
21. You may be asking yourselves, “How can we tell if a prophet's message really comes from the Lord?”
22. You will know, because if the Lord says something will happen, it will happen. And if it doesn't, you will know that the prophet was falsely claiming to speak for the Lord. Don't be afraid of any prophet whose message doesn't come from the Lord.