1 John 4:7-12, 19-21

Beloved, let us love one another: for love is of God; and every one that loveth is begotten of God, and knoweth God. He that loveth not knoweth not God; for God is love. Herein was the love of God manifested in us, that God hath sent his only begotten Son into the world that we might live through him. Herein is love, not that we loved God, but that he loved us, and sent his Son to be the propitiation for our sins. Beloved, if God so loved us, we also ought to love one another. No man hath beheld God at any time: if we love one another, God abideth in us, and his love is perfected in us

We love, because he first loved us. If a man say, I love God, and hateth his brother, he is a liar: for he that loveth not his brother whom he hath seen, cannot love God whom he hath not seen. And this commandment have we from him, that he who loveth God love his brother also.