Beloved, now we are children of God, and it is not yet revealed what we will be. But we know that, when he is revealed, we will be like him; for we will see him just as he is.
Be like him --  WG: Is this speaking of our "purity" or metaphysical appearance? It is not saying that everyone will look alike physically in heaven. But that BBC: "we will be free from the possibility of defilement, sin, sickness, sorrow, and death." BKC:  "Such a transformation will result from seeing Him as He is."  Barnes: "It is revealed to us that we shall be made like Christ; that is, in the bodies with which we shall be raised up, in character, in happiness, in glory." Barnes: "It is clearly implied here that there will be an influence in beholding the Saviour as he is, which will tend to make us like him, or to transform us into his likeness."