He called the cup, *the fruit of the vine*.
Also in John 6 He said that the flesh profits nothing and the Spirit gives life and the words He spoke were spirit and life.
The catholics are still not understanding the story about King David refusing to drink the blood of his soldiers that was retrieved from the well in Bethlehem.
And Paul clarifies that quite nicely in Galatians. (Pay attention this time I am getting tired of having to repeat myself.)
Gal 5:16 But I say, walk by the Spirit, and ye shall not fulfil the lust of the flesh.
Gal 5:17 For the flesh lusteth against the Spirit, and the Spirit against the flesh; for these are contrary the one to the other; that ye may not do the things that ye would.
Gal 5:18 But if ye are led by the Spirit, ye are not under the law.
Gal 5:19 Now the works of the flesh are manifest, which are these: fornication, uncleanness, lasciviousness,
Gal 5:20 idolatry, sorcery, enmities, strife, jealousies, wraths, factions, divisions, parties,
Gal 5:21 envyings, drunkenness, revellings, and such like; of which I forewarn you, even as I did forewarn you, that they who practise such things shall not inherit the kingdom of God.
Gal 5:22 But the fruit of the Spirit is love, joy, peace, longsuffering, kindness, goodness, faithfulness,
Gal 5:23 meekness, self-control; against such there is no law.
Gal 5:24 And they that are of Christ Jesus have crucified the flesh with the passions and the lusts thereof.