The substance of the bread becomes the BODY of OLJC, thus the consecration of the Host. Here we are witnessing the greatest oblation, or Sacrifice to redeem the sinful creature. This Holy Sacrifice is the highest form of action. OLJC, the Grand-Priest of the New Alliance who "priestly" yields to the Father... both being present.
Then he took bread, and blessed and broke it to them, saying, This is my body, given for you; do this for a commemoration of me.
Lk. XXII, 19 ...
also: Mk. XIV, 22 and Mt. XXVI, 26 and I Cor. XI, 23
THREE
ADORATIONS
(see: Resurrection)
It was this Melchisedech, king of Salem, and priest of the most high God, who met Abraham and blessed him on his way home, after the defeat of the kings; and to him Abraham gave a tenth of his spoils ... and it is beyond all question that blessings are only given by what is greater in dignity to what is less ...
Hebr. VII, 1, 7 and ...
And he, priest as he was of the most high God, brought out bread and wine with him, and gave him this benediction, On Abram be the blessing of the most high God, maker of heaven and earth ...
Gen. XIV, 18, 19
In their common ancestor, Abraham, all of the Levi's "coming priestly tribe" must take second rank to the priestly pre-eminence of OLJC that was "prefigured" by Melchisedech.
The Holy Scriptures are silent as to the origin and death of Melchisedech, he is there without mother and or father, no genealogy. He is priestly from a "personal" point of view, and not related to the Levi's tribe.
OLJC is also "independently" priest and His hypostatic union of the two natures is insoluble; His prieshood is eternal.