Revelation 2

14 But I have a few things against you: that you have there those who hold fast to the teaching of Balaam, who taught Balak to put a stumbling block before the sons of Israel, to eat food sacrificed to idols and to commit sexual immorality. 15 So likewise you also have those who hold fast to the teaching of the Nicolaitans. 16 Therefore repent! But if you do not, I am coming to you quickly, and I will make war with them with the sword from my mouth.