But there are a few things I have against you: there are some among you who follow the teaching of Balaam, who taught Balak how to lead the people of Israel into sin by persuading them to eat food that had been offered to idols and to practice sexual immorality. 1
References for Revelation 2:14
2.14 a Nu 22.5, 7; 31.16; Dt 23.4; b Nu 25.1-3.
In the same way you have people among you who follow the teaching of the Nicolaitans.