Revelation 2

14 But 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. 15 So thou also hast those who hold the doctrine of Nicolaitanes in like manner. 16 Repent therefore: but if not, I come to thee quickly, and I will make war with them with the sword of my mouth.