How is this so? I shall say at once. It is written of Melchizedek that he was "priest of God Most High" (Gen 14:18). If Melchizedek is the Holy Spirit, then the Spirit is brought down into the number of those who minister as priests, and He has a ministerial position.
Thus He too will sing praise to the Most High God together with the holy Angels. For it is written, "Bless the Lord, all His Angels, His ministers who do His will" (Ps 102:20-21).
There can be no doubt whatever that anyone who performs priestly service for another does not serve himself as priest, but God, as a higher being. Therefore, if we say that the Spirit serves as priest, we certainly place Him below the divine nature.
Even more, in that case He is placed among produced beings and will worship together with us. In any case He will not sanctify Himself, since what is sanctified is, of course, sanctified by a being higher in nature than itself. Then He will be sanctified together with us.
How then will that which is sanctified be God by nature? Is not every priest sanctified and in this way approach the fulfillment of the priestly office? "For no one takes this honor to himself, but he who is called by God, as Aaron was" (Heb 5:4).
Paul added that Christ also did not appropriate to Himself the glory of becoming High Priest. Rather, it was given by Him Who said to Him, "You are My Son, today I have begotten You." As He also says in another place, "You are a priest forever according to the order of Melchizedek" (Heb 5:5-6; cf. Ps 2:7; Ps 109:4).
We must know that the Son Himself, the Word Who came forth from God the Father, could not, as it is said, serve as priest and be in a ministerial rank, unless He were understood as having become like us. He is called prophet (Acts 3:22; cf. Deut 18:15), apostle (Heb 3:1), and likewise priest (Heb 5:6; Ps 109:4), according to His humanity.
The form of servitude and a servant's condition befit Him. This is His emptying. For He is in the form of the Father and in equality with Him. He is the One before Whom even the highest Seraphim stand, and Whom thousands of thousands of Angels serve (Dan 7:10).
When He emptied Himself (Phil 2:6-7), then, and only then, did He appear as "minister of the sanctuary and of the true tabernacle," as it is said (Heb 8:2). Then He also was sanctified together with us, though He is higher than every creature.
For "He Who sanctifies and those who are sanctified are all of One. Therefore He is not ashamed to call them brethren," saying, "I will declare Your name to My brethren" (Heb 2:11-12; Ps 21:23).
Thus, while sanctifying as God, when He became man, dwelt among us (Jn 1:14), and was called brother according to humanity, He is also sanctified together with us, as it is said.
Therefore both the office of the priesthood and His sanctification together with us belong to God's divine economy concerning the flesh. This is what we shall ascribe to the measure of His emptying, if we resolve to think rightly and without reproach.
But if we say that the Holy Spirit, Who in no way underwent emptying, serves as priest, then we deprive Him of the glory befitting God. We number Him among those subject to God, assigning Him the status of a created being.
Or let them show us that the Spirit became man and underwent the abasement appointed by the divine economy, as is certainly the case with the Son. Because the holy and worshiped Trinity is consubstantial, one may not assign the work of becoming man to any of Its Persons at will.
The Father Himself did not become man, nor did the Holy Spirit, but only the Son. This is how the divine Scriptures initiate us into the mystery.
Why then do they do violence to the truth and ascribe emptying to the Holy Spirit, Who cannot even undergo emptying, when they number Him among those who serve as priests? For Melchizedek was a priest.
But they say that, in honor of the Son and as a type of His priesthood that would come in time, the Spirit transformed Himself by Himself. I shall say, then, that the Holy Spirit neglected honor and love toward the Son, and considered care for this matter of little importance.
But how would it not be idle talk to think or say this? The Comforter, that is, the Spirit, will glorify the Son. The Son says of Him, "He will glorify Me" (Jn 16:14).
Therefore, if He wishes to honor Him, and does so without ceasing, why did He not rather become Aaron? Or Cyrus, king of the Persians and Medes? Or Jesus son of Josedek, or Zerubbabel son of Shealtiel, of the tribe of Judah?
Why did He not become Moses, to whom, since he showed in himself the mediation of Christ, it was said, "I will raise up for them a Prophet from among their brethren, like you, and I will put My words in His mouth, and He shall speak to them all that I command Him" (Deut 18:17; cf. Acts 3:22)?
Why did He not become Joshua, the leader after Moses, who brought the sons of Israel through the Jordan, performed circumcision with stone knives, and brought them into the land of promise? Are we not baptized in Christ and circumcised with a circumcision made without hands through the Spirit (Col 2:11)? Have we not become heirs of the Kingdom of Heaven?
Is all this not clear? Therefore either we shall imagine the Spirit constantly transforming Himself, even as though into each of those named above, in order to honor the Son, or this statement will be true. He is proved to have little concern for what is fitting, since He entered into some of the ancients to present through them the image and likeness of the Son.
Away with such mindless thoughts! Melchizedek, then, is a man, not the Holy Spirit. Yet he also receives the image of a priesthood higher than that according to the law, in blessing Abraham and in setting before him wine and bread.
For we are blessed by none other than Christ, the great and true Priest. We are blessed according to the blessing of the divine Abraham, when we war most manfully against the rulers of this age. We prove stronger than the enemy's hand, and need nothing worldly.
Rather, we count as noetic wealth what comes from God, and the glorious and unfading distribution of the gifts from above.
Pay attention to this. Abraham had defeated the enemies and was returning "from the kings," as it is written (Gen 14:17). Yet he did not deign to take anything for himself from the prince of Sodom, and Melchizedek blessed him (Gen 14:19).
The ruler of the Sodomites said to Abraham, as to the victor, "Give me the persons, and take the goods for yourself" (Gen 14:21). But Abraham, not wishing to appropriate any of his possessions, said to him, "I lift up my hand to the Lord God Most High, Master of heaven and earth, that I will not take even a thread or a sandal strap from all that is yours, lest you should say, I have made Abram rich" (Gen 14:22-23).
For the saints do not have the custom of rejoicing in worldly wealth. Therefore, when we conquer visible and invisible enemies and receive nothing from the world, but instead honor the wealth above, we receive the blessing through Christ, the King of peace.
We receive the blessing by receiving the mystical gift, as a gift from heaven and provision for life. Let this be passed over in silence for now, if you wish.
We are also blessed by Christ through His intercession for us before God. Melchizedek blessed Abraham, saying, "Blessed be God Most High, Who delivered your enemies into your hands" (Gen 14:20). Our Lord Jesus Christ, the propitiation for us all, says, "Holy Father, keep them in Your truth" (Jn 17:11, 17).
From the very interpretation of the names, the Apostle draws what is useful for the prefiguration of Christ. The very form of the priesthood also gives a clear indication of the same thing. "Melchizedek brought out bread and wine" (Gen 14:18).