Revelation 2

14 But I have a few things against you, because some of you hold to the teaching of Balaam, who taught Balak to place a stumbling block before the Israelites so they would eat food sacrificed to idols and commit sexual immorality. 15 In the same way, some of you also hold to the teaching of the Nicolaitans. 16 Therefore repent! Otherwise I will come to you shortly and wage war against them with the sword of My mouth.