1 Corinthians 11:16-19 New King James Version (NKJV)

16. But if anyone seems to be contentious, we have no such custom, nor do the churches of God.

17. Now in giving these instructions I do not praise you, since you come together not for the better but for the worse.

18. For first of all, when you come together as a church, I hear that there are divisions among you, and in part I believe it.

19. For there must also be factions among you, that those who are approved may be recognized among you.

1 Corinthians 11