1 Corinthians 12:1-3

Now concerning spiritual gifts, brethren, I would not have you ignorant. Ye know that when ye were Gentiles ye were led away unto those dumb idols, howsoever ye might be led. Wherefore I make known unto you, that no man speaking in the Spirit of God saith, Jesus is anathema; and no man can say, Jesus is Lord, but in the Holy Spirit.