Revelation 2:13-16

13“I know that you live in the city where Satan has his throne, yet you have remained loyal to me. You refused to deny me even when Antipas, my faithful witness, was martyred among you there in Satan’s city.

14“But I have a few complaints against you. You tolerate some among you whose teaching is like that of Balaam, who showed Balak how to trip up the people of Israel. He taught them to sin by eating food offered to idols and by committing sexual sin.

15In a similar way, you have some Nicolaitans among you who follow the same teaching.

16Repent of your sin, or I will come to you suddenly and fight against them with the sword of my mouth.