The "Another Comforter"
“When He should come forth from the tomb, their sorrow would be turned to joy. After His ascension He was to be absent in person; but through the Comforter He would still be with them, and they were not to spend their time in mourning.” The Desires Of Ages p.277
In Jn 14:17-19, did Jesus explain who the comforter is?
“The Holy Spirit is Christ’s representative, but divested of the personality of humanity, and independent thereof. Cumbered with humanity, Christ could not be in every place personally. Therefore it was for their interest that He should go to the Father, and send the Spirit to be His successor on earth. No one could then have any advantage because of his location or his personal contact with Christ. By the Spirit the Saviour would be accessible to all. In this sense He would be nearer to them than if He had not ascended on high.”—The Desire of Ages, p. 669.
“The Comforter is called “the Spirit of truth.” His work is to define and maintain the truth. He first dwells in the heart as the Spirit of truth, and thus He becomes the Comforter. There is comfort and peace in the truth, but no real peace or comfort can be found in falsehood. . . .Through the Scriptures the Holy Spirit speaks to the mind, and impresses truth upon the heart. Thus He exposes error, and expels it from the soul. It is by the Spirit of truth, working through the Word of God, that Christ subdues His chosen people to Himself.” (The Desire of Ages, pp. 668-671).
Inspiration tells that, “Jesus is the comforter!”
“How essential that we have the enlightenment of the Spirit of God; for thus only can we see the glory of Christ, and by beholding become changed from character to character in and through faith in Christ. We turn from the picture of our shortcomings to behold the atonement made for us, and we rejoice as we know that we may be clothed with Christ’s righteousness. In Him all fullness dwells. He has grace and pardon for every soul. As by faith we look to Jesus, our faith pierces the shadow, and we adore God for His wondrous love in giving Jesus the Comforter.” 19MR 297-298
The comforter that Jesus prayed for his Father to send would be the same Jesus in a none bodily form, so by this Spirit form he could be with them, all at once.
The Spirit operates on the internal invisible level, representing God and his Son in a non-bodily form.