For there must also be factions among you, that those who are approved may be recognized among you.
1 Corinthians 11:19
Surrounding context
11:18 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.
11:19 For there must also be factions among you, that those who are approved may be recognized among you.
11:20 Therefore when you come together in one place, it is not to eat the Lord's Supper.