Revelation 2:13-16

13I know where thou dwellest, where the throne of Satan [is]; and thou holdest fast my name, and hast not denied my faith, even in the days in which Antipas my faithful witness [was], who was slain among you, where Satan dwells.

14But I have a few things against thee: that thou hast there those who hold the doctrine of Balaam, who taught Balak to cast a snare before the sons of Israel, to eat [of] idol sacrifices and commit fornication.

15So thou also hast those who hold the doctrine of Nicolaitanes in like manner.

16Repent therefore: but if not, I come to thee quickly, and I will make war with them with the sword of my mouth.