1 Corinthians 12:2-4 Living Bible (TLB)
2 You will remember that before you became Christians you went around from one idol to another, not one of which could speak a single word. 3 But now you are meeting people who claim to speak messages from the Spirit of God. How can you know whether they are really inspired by God or whether they are fakes? Here is the test: no one speaking by the power of the Spirit of God can curse Jesus, and no one can say, “Jesus is Lord,” and really mean it, unless the Holy Spirit is helping him.
4 Now God gives us many kinds of special abilities, but it is the same Holy Spirit who is the source of them all.