1 Corinthians 11:16-19

16Now if anyone is inclined to be contentious [about this], we have no other practice [in worship than this], nor do the churches of God [in general].

17But in giving this next instruction, I do not praise you, because when you meet together it is not for the better but for the worse.

18For, in the first place, when you meet together in church, I hear that there are divisions among you; and in part I believe it,

19for [doubtless] there have to be factions among you, so that those who are of approved character may be clearly recognized among you.