He who says he is in the light and yet hates his brother, is in the darkness till now. He who loves his brother, abides in the light, and there is no stumbling block to him.

1 John 3:14-18

We know that we have passed away from death to life, because we love the brethren. He who loves not his brother, abides in death. Every one who hates his brother, is a manslayer; and you know that no manslayer has eternal life abiding in him. By this we have known the love of Christ, because he laid down his life for us; therefore we ought to lay down our lives for the brethren. read more.
Whoever, therefore, has the goods of this world, and sees his brother in need, and yet shuts up his compassion from him, how abides the love of God in him? My little children, let us not love in word, nor in tongue; but in deed, and in truth.

1 John 4:7-11

Knowledge » Who does not know God

1 John 4:8

1 John 3:1-6

Behold how great love the Father has bestowed on us, that we should be called children of God! For this reason, the world does not know us, because it did not know him. Beloved, now we are the children of God; but it does not yet appear what we shall be. However, we know that when he shall appear, we shall be like him-that we shall see him as he is. And every one who has this hope in him purifies himself, even as He is pure. read more.
Every one who works sin, works also the transgression of law; for sin is the transgression of law. Moreover, you know that he was manifested that he might take away our sins-and in him is no sin. Whoever abides in him, does not sin. Whoever sins has not seen him, neither has known him.

Love » Those that do not love others

1 John 3:10

1 John 4:8

Love » God being love

1 John 4:7-8

Beloved, let us love one another; for love is from God: and every one who loves, has been begotten by God, and knows God. He who does not love, does not know God; for God is love.

Love » The source of love

1 John 4:7-21

Beloved, let us love one another; for love is from God: and every one who loves, has been begotten by God, and knows God. He who does not love, does not know God; for God is love. By this the love of God was manifested to us, that God sent forth his Son, the only begotten, into the world, that we might live through him. read more.
In this is love, not that we loved God, but that he loved us, and sent forth his Son to be a propitiation for our sins. Beloved, if God so loved us, we, also, ought to love one another. No one has seen God, at any time. If we love one another, God abides in us, and his love is made perfect in us. By this, we know that we abide in him, and he in us, because he has given us of his Spirit. Now we have seen, and bear testimony, that the Father has sent forth his Son, to be the Saviour of the world. Whoever will confess that Jesus is the Son of God, God abides in him, and he in God. And we have known, and believed the love which God has in us. God is love; wherefore, he who abides in love, abides in God, and God in him. By this, the love has been perfected in us, that we may have boldness in the day of judgment; because as he is, so are we in this world. There is no fear in love; but perfect love casts out fear, because fear has torment: therefore, he who fears is not made perfect in love. We love him, because he first loved us. If any one say, Indeed I love God, and yet hate his brother, he is a liar: for he who loves not his brother, whom he has seen, how can he love God, whom he has not seen? Moreover, this commandment we have from him, that he who loves God, loves his brother, also.