1 Corinthians 11:17-20

But in giving this instruction, I do not praise you, because you come together not for the better but for the worse. For, in the first place, when you come together as a church, I hear that divisions exist among you; and in part I believe it. For there must also be factions among you, so that those who are approved may become evident among you. Therefore when you meet together, it is not to eat the Lord’s Supper