We can judge a person by their fruits, what a person lives – Matt 7:15-20.
As a tree is know by its fruit, so do we judge of the character of men by their conduct.
Warn a divisive person once, and then warn him a second time. After that, have nothing to do with him.
You may be sure that such a man is warped and sinful; he is self-condemned – Tit 3:10,11. Paul made a judgment about someone – from what he had heard from other Christians – 1 Cor 5:1-3.
Lord forgive me of my past judgments of others and keep me on your path to Holy Light