But whoever keeps His word, truly in him the love of God is perfected. This is how we know we are in Him:

I am writing to you, fathers,
because you have come to know
the One who is from the beginning.
I am writing to you, young men,
because you have had victory over the evil one.

I have written to you, children,
because you have come to know the Father.
I have written to you, fathers,
because you have come to know
the One who is from the beginning.
I have written to you, young men,
because you are strong,
God’s word remains in you,
and you have had victory over the evil one.

This is how God’s children—and the Devil’s children—are made evident.

Whoever does not do what is right is not of God, especially the one who does not love his brother.

No one has ever seen God. If we love one another, God remains in us and His love is perfected in us.

Whoever confesses that Jesus is the Son of God—God remains in him and he in God.