By this the children of God and the children of the devil are obvious: anyone who does not practice righteousness is not of God, nor the one who does not love his brother.
For this is the message which you have heard from the beginning, that we should love one another;
In this 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 one has seen God at any time; if we love one another, God abides in us, and His love is perfected in us.
We love, because He first loved us.
If someone says, "I love God," and hates his brother, he is a liar; for the one who does not love his brother whom he has seen, cannot love God whom he has not seen.
And this commandment we have from Him, that the one who loves God should love his brother also.
Whoever believes that Jesus is the Christ is born of God, and whoever loves the Father loves the child born of Him.
By this we know that we love the children of God, when we love God and observe His commandments.