Read this passage and open each verse for the full verse feed and commentary tools.
7Beloved, let us love one another, for love is of God; and everyone who loves is born of God, and knows God. 8He who doesn`t love doesn`t know God, for God is love. 9By this was God`s love revealed in us, that God has sent his only born Son into the world that we might live through him. 10In this is love, not that we loved God, but that he loved us, and sent his Son as the atoning sacrifice for our sins. 11Beloved, if God loved us so, we also ought to love one another. 12No one has seen God at any time. If we love one another, God remains in us, and his love has been perfected in us. 13By this we know that we remain in him and he in us, because he has given us of his Spirit. 14We have seen and testify that the Father has sent the Son as the Savior of the world. 15Whoever will confess that Jesus is the Son of God, God remains in him, and he in God. 16We know and have believed the love which God has in us. God is love, and he who remains in love remains in God, and God remains in him. 17In this love has been made perfect with us, that we may have boldness in the day of judgment, because as he is, even so are we in this world. 18There is no fear in love; but perfect love casts out fear, because fear has punishment. He who fears is not made perfect in love. 19We love Him, because he first loved us. 20If 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? 21This commandment have we from him, that he who loves God should also love his brother.
1 John 4:7-21 (WEB)