But whoever hates his brother is in the darkness, and in darkness he walks, and he does not know where he is going. For the darkness has blinded his eyes.
In this way, the sons of God are made manifest, and also the sons of the devil. Everyone who is not just, is not of God, as also anyone who does not love his brother.
If anyone says that he loves God, but hates his brother, then he is a liar. For he who does not love his brother, whom he does see, in what way can he love God, whom he does not see?