Look At The Person’s Fruit, Even If They Say They Are Of Jesus Or Christian

1 John 2:9-11 (GWTransl)
Those who say that they are in the light but hate other believers are still in the dark. Those who love other believers live in the light. Nothing will destroy the faith of those who live in the light. Those who hate other believers are in the dark and live in the dark. They don’t know where they’re going, because they can’t see in the dark.