But whoever hates his brother is in the darkness and walks in the darkness. He doesn’t know where he is going, because the darkness has made his eyes blind.
It is clear who are the children of God and who are the children of the devil by this—anyone who does not act righteously or love his brother is not of God.
If anyone says, “I love God,” and hates his brother, he is a liar. For the one who does not love his brother, whom he has seen, cannot love God, whom he has not seen.