See what love the Father has given us, that we should be called children of God; and that is what we are. The reason the world does not know us is that it did not know him.
Beloved, we are God's children now; what we will be has not yet been revealed. What we do know is this: when he is revealed, we will be like him, for we will see him as he is.
References for 1 John 3:2
And all who have this hope in him purify themselves, just as he is pure.
Everyone who commits sin is guilty of lawlessness; sin is lawlessness.
You know that he was revealed to take away sins, and in him there is no sin.
No one who abides in him sins; no one who sins has either seen him or known him.