1 Corinthians 11:16-19

Riverside(i) 16 But if any one cares to be contentious, we have no such custom, nor have the churches of God. 17 In giving the following directions I do not praise you, because you do not assemble for the better, but for the worse. 18 For, in the first place, I hear that when you assemble as a church there are parties among you, and to some extent I believe it. 19 For there must be parties among you in order that it may become plain who are worthy of approval.