John 17:1

He first declareth, that as he came into the world to the end that the Father might show in him, being apprehended by faith, his glory in saving his elect, so he applied himself to that only: and therefore desireth of the Father, that he would bless the work which he hath finished. Jesus Christ the everlasting high Priest being ready straightway to offer up himself, doth by solemn prayers consecrate himself to God the Father as a sacrifice: and us together with himself. Therefore this prayer was from the beginning, is, and shall be to the end of the world, the foundation and ground of the Church of God.

Glorify thy Son, by signs and miracles, lest dying so disgraceful a death, I seem to be no more than another man: that thy Son may glorify thee, that my death may make thee praised and glorified. (Witham)

First, See here what he prayed for: Glorify thou me, as before, v. 1. All repetitions in prayer are not to be counted vain repetitions; Christ prayed, saying the same words (Matt 26 44), and yet prayed more earnestly. What his Father had promised him, and he was assured of, yet he must pray for; promises are not designed to supersede prayers, but to be the guide of our desires and the ground of our hopes. Christ's being glorified includes all the honours, powers, and joys, of his exalted state. See how it is described. 1. It is a glory with God; not only, Glorify my name on earth, but, Glorify me with thine own self. It was paradise, it was heaven, to be with his Father, as Prov 8 30; Dan 7 13; Heb 8 1. Note, The brightest glories of the exalted Redeemer were to be displayed within the veil, where the Father manifests his glory. The praises of the upper world are offered up to him that sits upon the throne and to the lamb in conjunction (Rev 5 13), and the prayers of the lower world draw out grace and peace from God our Father and our Lord Jesus Christ in conjunction; and thus the Father has glorified him with himself. 2. It is the glory he had with God before the world was. By this it appears, (1.) That Jesus Christ, as God, had a being before the world was, co-eternal with the Father; our religion acquaints us with one that was before all things, and by whom all things consist. (2.) That his glory with the Father is from everlasting, as well as his existence with the Father; for he was from eternity the brightness of his Father's glory, Heb 1 3. As God's making the world only declared his glory, but made no real additions to it; so Christ undertook the work of redemption, not because he needed glory, for he had a glory with the Father before the world, but because we needed glory. (3.) That Jesus Christ in his state of humiliation divested himself of this glory, and drew a veil over it; though he was still God, yet he was God manifested in the flesh, not in his glory. He laid down this glory for a time, as a pledge that he would go through with his undertaking, according to the appointment of his Father. (4.) That in his exalted state he resumed this glory, and clad himself again with his former robes of light. Having performed his undertaking, he did, as it were, reposcere pignus—take up his pledge, by this demand, Glorify thou me. He prays that even his human nature might be advanced to the highest honour it was capable of, his body a glorious body; and that the glory of the Godhead might now be manifested in the person of the Mediator, Emmanuel, God-man. He does not pray to be glorified with the princes and great men of the earth: no; he that knew both worlds, and might choose which he would have his preferment in, chose it in the glory of the other world, as far exceeding all the glory of this. He had despised the kingdoms of this world and the glory of them, when Satan offered them to him, and therefore might the more boldly claim the glories of the other world. Let the same mind be in us. "Lord, give the glories of this world to whom thou wilt give them, but let me have my portion of glory in the world to come. It is no matter, though I be vilified with men; but, Father, glorify thou me with thine own self."

Verses 1-5 Our Lord prayed as a man, and as the Mediator of his people; yet he spoke with majesty and authority, as one with and equal to the Father. Eternal life could not be given to believers, unless Christ, their Surety, both glorified the Father, and was glorified of him. This is the sinner's way to eternal life, and when this knowledge shall be made perfect, holiness and happiness will be fully enjoyed. The holiness and happiness of the redeemed, are especially that glory of Christ, and of his Father, which was the joy set before him, for which he endured the cross and despised the shame; this glory was the end of the sorrow of his soul, and in obtaining it he was fully satisfied. Thus we are taught that our glorifying God is needed as an evidence of our interest in Christ, through whom eternal life is God's free gift.