By Human Standards

1 Corinthians 3:3-4 ISV

 3 That's because you are still worldly. As long as there is jealousy and quarreling among you, you are worldly and living by human standards, aren't you? 4 For when one person says, "I follow Paul," and another person says, "I follow to Apollos," you're following your own human nature, aren't you?

Division in the body reflects the invasion of the world and the knowledge of good and evil.