Everyone who believes that Jesus is the Christ has been born from God. Whoever loves someone who is a parent loves the child born to the parent.
This is how we know that we love the children of God: when we love God and keep God's commandments.
This is the love of God: we keep God's commandments. God's commandments are not difficult,
because everyone who is born from God defeats the world. And this is the victory that has defeated the world: our faith.
Who defeats the world? Isn't it the one who believes that Jesus is God's Son?
This is the one who came by water and blood: Jesus Christ. Not by water only but by water and blood. And the Spirit is the one who testifies, because the Spirit is the truth.
The three are testifying—
the Spirit, the water, and the blood—and the three are united in agreement.