11 Beloved, if God loved us in this way, we also ought to love one another. 12 No one has seen God at any time. If we love one another, God remains in us, and his love has been perfected in us.
20 If a man says, "I love God," and hates his brother, he is a liar; for he who doesn’t love his brother whom he has seen, how can he love God whom he has not seen? 21 This commandment we have from him, that he who loves God should also love his brother.