Galatians 1:8-10

But even if we (or an angel from heaven) should announce any “good news” to you other than what we have proclaimed to you, let that person be cursed! As we have said before, so I now repeat: if anyone proclaims to you “good news” other than what you received, let that person be under a curse! Am I now trying to win people’s approval, or God’s? Or am I trying to please people? If I were still trying to please people, I would not be a servant of Messiah.