See how much the Father has loved us! His love is so great that we are called God's children - and so, in fact, we are. This is why the world does not know us: it has not known God. 1
My dear friends, we are now God's children, but it is not yet clear what we shall become. But we know that when Christ appears, we shall be like him, because we shall see him as he really is.
Everyone who has this hope in Christ keeps himself pure, just as Christ is pure.