Revelation 2:6

But this you have, that you hate the works of the Nicolaitans, which I hate.

2 John 1:9-10

Whoever is going ahead, and is not abiding in the teachings of Christ, does not possess God; but he who is abiding in the teaching possesses both the Father and the Son.

Revelation 2:14-15

But I have a few things against you, because you have there some who hold to the teaching of Balaam, who taught Balak to put a stumbling-block before the sons of Israel, to eat food offered to idols, and to practise immorality.

Treasury of Scripture Knowledge

Summary

But this thou hast, that thou hatest the deeds of the Nicolaitans, which I also hate.

Bible References

That

Revelation 2:14
But I have a few things against you, because you have there some who hold to the teaching of Balaam, who taught Balak to put a stumbling-block before the sons of Israel, to eat food offered to idols, and to practise immorality.
2 John 1:9
Whoever is going ahead, and is not abiding in the teachings of Christ, does not possess God; but he who is abiding in the teaching possesses both the Father and the Son.