5 Now I beg you, dear lady, not as though I wrote to you a new commandment, but that which we had from the beginning, that we love one another.
A new commandment I give to you, that you love one another, just like I have loved you; that you also love one another. By this everyone will know that you are my disciples, if you have love for one another."
Seeing you have purified your souls in your obedience to the truth through the Spirit in sincere brotherly affection, love one another from the heart fervently: having been born again, not of corruptible seed, but of incorruptible, through the word of God, which lives and remains forever.
Brothers, I write no new commandment to you, but an old commandment which you had from the beginning. The old commandment is the word which you heard from the beginning. Again, I write a new commandment to you, which is true in him and in you; because the darkness is passing away, and the true light already shines.
We know that we have passed out of death into life, because we love the brothers. He who doesn't love his brother remains in death. Whoever hates his brother is a murderer, and you know that no murderer has eternal life remaining in him. By this we know love, because he laid down his life for us. And we ought to lay down our lives for the brothers. But whoever has the world's goods, and sees his brother in need, and closes his heart of compassion against him, how does the love of God remain in him? My little children, let's not love in word only, neither with the tongue only, but in deed and truth.
Beloved, let us love one another, for love is of God; and everyone who loves is born of God, and knows God. He who doesn't love doesn't know God, for God is love. By this was God's love revealed in us, that God has sent his one and only Son into the world that we might live through him. In this is love, not that we loved God, but that he loved us, and sent his Son as the atoning sacrifice{"atoning sacrifice" is from the Greek "hilasmos," an appeasing, propitiating, or the means of appeasement or propitiation-- the sacrifice that turns away God's wrath because of our sin.} for our sins. Beloved, if God loved us in this way, we also ought to love one another. 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.