John 6:63

“It is the Spirit that quickeneth, etc.] It is the spirit of man that quickens him; or which being breathed into him, he becomes a living soul; for the body, without the spirit, is dead; it is a lifeless lump: and it is the Spirit of God that quickens dead sinners, by entering into them as the spirit of life, and causing them to live: and it is spiritual eating, or eating the flesh, and drinking the blood of Christ in a spiritual sense, which quickens, refreshes, and comforts the minds of believers; it is that by, and on which they live, and by which their spiritual strength is renewed: unless, by spirit, is meant the divine nature of Christ, by which he was quickened and raised from the…”

“the flesh profiteth nothing--Much of His discourse was about "flesh"; but flesh as such, mere flesh, could profit nothing, much less impart that life which the Holy Spirit alone communicates to the soul. the words that I speak . . . are spirit and . . . life--The whole burden of the discourse is "spirit," not mere flesh, and "life" in its highest, not its lowest sense, and the words I have employed are to be interpreted solely in that sense.”

“It is the Spirit that quickeneth - These words have been understood in different ways. The word “Spirit,” here, evidently does not refer to the Holy Spirit, for he adds, “The words that I speak unto you, they are spirit.” He refers here, probably, to the doctrine which he had been teaching in opposition to their notions and desires. “My doctrine is spiritual; it is fitted to quicken and nourish the soul. It is from heaven. Your doctrine or your views are earthly, and may be called flesh, or fleshly, as pertaining only to the support of the body. You place a great value on the doctrine that Moses fed the body; yet that did not permanently profit, for your fathers are dead. You seek also food…”

“It is the Spirit - The spiritual meaning of these words, by which God giveth life. The flesh - The bare, carnal, literal meaning, profiteth nothing. The words which I have spoken, they are spirit - Are to be taken in a spiritual sense and, when they are so understood, they are life - That is, a means of spiritual life to the hearers. John 6:64”

“6:63 The essence of Jesus’ gift is found in the Holy Spirit alone, not in human effort (literally the flesh). Life and understanding come through the gift of the Spirit (see 14:15-20; 20:21-22). True life can be found only when the Holy Spirit infuses human life.”

“the spirit: Gen 2:7; Rom 8:2; Co1 15:45; Co2 3:6; Gal 5:25; Pe1 3:18 the flesh: Rom 2:25, Rom 3:1, Rom 3:2; Co1 11:27-29; Gal 5:6, Gal 6:15; Ti1 4:8; Heb 13:9; Pe1 3:21 the words: Joh 6:68, Joh 12:49, Joh 12:50; Deu 32:47; Psa 19:7-10, Psa 119:50, Psa 119:93, Psa 119:130; Rom 10:8-10, Rom 10:17; Co1 2:9-14; Co2 3:6-8; Th1 2:13; Heb 4:12; Jam 1:18; Pe1 1:23 John 6:64”