John Calvin on John 17:5

5. The glory which I had with thee. He desires to be glorified with the Father, not that the Father may glorify him secretly, without any witnesses, but that, having been received into heaven, he may give a magnificent display of his greatness and power, that every knee may bow to him, (Philippians 2:10.) Consequently, that phrase in the former clause, with the Father, is contrasted with earthly and fading glory, as Paul describes the blessed immortality of Christ, by saying that

he died to sin once, but now he liveth to God, (Romans 6:10.)

The glory which I had with thee before the world was. He now declares that he desires nothing that does not strictly belong to him, but only that he may appear in the flesh, such as he was before the creation of the world; or, to speak more plainly, that the Divine majesty, which he had always possessed, may now be illustriously displayed in the person of the Mediator, and in the human flesh with which he was clothed. This is a remarkable passage, which teaches us that Christ is not a God who has been newly contrived, or who has existed only for a time; for if his glory was eternal, himself also has always been. Besides, a manifest distinction between the person of Christ and the person of the rather is here expressed; from which we infer, that he is not only the eternal God, but also that he is the eternal Word of God, begotten by the rather before all ages.

John 17:6-11

6. I have manifested thy name to the men whom thou hast given me out of the world; thine they were, and thou hast given them to me, and they have kept thy word. 7. Now they have known that all things which thou hast given me are from thee; 8. For I have given to them the words which thou gavest me, and they have received them, and have known truly that I came out from thee, and have believed that thou hast sent me. 9. I pray for them; I do not pray for the world, but for those whom thou hast given me, for they are thine; 10. And all that is mine is thine, and thine is mine; “Et tout ec qui est mien est tien, et ce qui est tien est mien;” — “And all that is mine is thine, and what is thine is mine.” and I am glorified in them. 11. And I am no longer in the world, but these are in the world, and I come to thee. Holy Father, keep in thy name those whom thou hast given me, that they may be one, as we are.