John Calvin Commentary John 17:22

"And the glory which thou hast given me I have given unto them; that they may be one, even as we [are] one;" — John 17:22 (ASV)

And I have given to them the glory which you gave to me. Let it be observed here that, while a pattern of perfect happiness was exhibited in Christ, he had nothing that belonged specifically to himself, but rather was rich, in order to enrich those who believed in him. Our happiness lies in having the image of God restored and formed anew in us, which was defaced by sin. Christ is not only the living image of God, insofar as he is the eternal Word of God, but even on his human nature, which he has in common with us, the likeness of the glory of the Father has been engraved, so as to shape his members to resemble it. Paul also teaches us this:

we all, with unveiled face, by beholding THE GLORY OF GOD, are changed into the same image, (2 Corinthians 3:18).

Hence it follows that no one ought to be considered among the disciples of Christ, unless we perceive the glory of God impressed on him, as with a seal, by the likeness of Christ. To the same purpose are the words which immediately follow: