Revelation 2:12-15

And to the angel of the church in Pergamum write: These things saith he that hath the sharp two-edged sword: I know where thou dwellest, even where Satan’s throne is; and thou holdest fast my name, and didst not deny my faith, even in the days of Antipas my witness, my faithful one, who was killed among you, where Satan dwelleth. But I have a few things against thee, because thou hast there some that hold the teaching of Balaam, who taught Balak to cast a stumblingblock before the children of Israel, to eat things sacrificed to idols, and to commit fornication. So hast thou also some that hold the teaching of the Nicolaitans in like manner.