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.
But who will be able to endure the day when he comes? Who will be able to survive when he appears? He will be like strong soap, like a fire that refines metal.
“Father! You have given them to me, and I want them to be with me where I am, so that they may see my glory, the glory you gave me; for you loved me before the world was made.
What we see now is like a dim image in a mirror; then we shall see face-to-face. What I know now is only partial; then it will be complete—as complete as God's knowledge of me.
However, as the scripture says, “What no one ever saw or heard, what no one ever thought could happen, is the very thing God prepared for those who love him.”
All of us, then, reflect the glory of the Lord with uncovered faces; and that same glory, coming from the Lord, who is the Spirit, transforms us into his likeness in an ever greater degree of glory.
He will change our weak mortal bodies and make them like his own glorious body, using that power by which he is able to bring all things under his rule.
In the same manner Christ also was offered in sacrifice once to take away the sins of many. He will appear a second time, not to deal with sin, but to save those who are waiting for him.
In this way he has given us the very great and precious gifts he promised, so that by means of these gifts you may escape from the destructive lust that is in the world, and may come to share the divine nature.
My dear friends, this command I am writing you is not new; it is the old command, the one you have had from the very beginning. The old command is the message you have already heard.
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.
Here is the clear difference between God's children and the Devil's children: those who do not do what is right or do not love others are not God's children.