Genesis 14:18

Therefore, in this general and primordial law of God, the observance of which, in the case of the tree’s fruit, He had sanctioned, we recognise en closed all the precepts specially of the posterior Law, which germinated when dis closed at their proper times. For the subsequent superinduction of a law is the work of the same Being who had before premised a precept; since it is His province withal subsequently to train, who had before resolved to form, righteous creatures. For what wonder if He extends a discipline who institutes it? if He advances who begins? In short, before the Law of Moses, written in stone-tables, I contend that there was a law unwritten, which was habitually understood naturally, and by the fathers was habitually kept. …

4. Also in the priest Melchizedek we see prefigured the sacrament of the sacrifice of the Lord, according to what divine Scripture testifies, and says, “And Melchizedek, king of Salem, brought forth bread and wine.” Now he was a priest of the most high God, and blessed Abraham. And that Melchizedek bore a type of Christ, the Holy Spirit declares in the Psalms, saying from the person of the Father to the Son: “Before the morning star I begat Thee; Thou art a priest for ever, after the order of Melchizedek;” which order is assuredly this coming from that sacrifice and thence descending; that Melchizedek was a priest of the most high God; that he offered wine and bread; that he blessed Abraham. …

45. But these writings of the apostles, though clear, are yet profound, and are so written that one who is not content with a superficial acquaintance, but desires to know them thoroughly, must not only read and hear them, but must have an expositor. Let us, then, study these various modes of speech as they are exemplified in the writings of men who, by reading the Scriptures, have attained to the knowledge of divine and saving truth, and have ministered it to the Church. Cyprian of blessed memory writes in the subdued style in his treatise on the sacrament of the cup. In this book he resolves the question, whether the cup of the Lord ought to contain water only, or water mingled with wine. But we must quote a passage by way of illustration. After the customary introduction, he proceeds to the discussion of the point in question. …

Of this flesh and blood Melchizedek also, when he blessed Abram himself, gave the testimony which is very well known to Christian believers, so that long afterwards it was said to Christ in the Psalms: “Thou art a Priest for ever, after the order of Melchizedek.” This was not then an accomplished fact, but was still future; yet that faith of the fathers, which is the self-same faith as our own, used to chant it. Now, to all who find death in Adam, Christ is of this avail, that He is the Mediator for life. …

17. But this Melchizedec is introduced in the Holy Scriptures as a priest of the most high God, not consecrated by any anointing oil, especially prepared, and not even belonging by descent to the priesthood of the Jews. Wherefore after his order, but not after the order of the others, who received symbols and types, was our Saviour proclaimed, with an appeal to an oath, Christ and priest.

Since, then, He who is with the Father, in some inconceivable category, before the ages admits not of a ‘sometime,’ He exists by generation indeed, but nevertheless He never begins to exist. His life is neither in time, nor in place. But when we take away these and all suchlike ideas in contemplating the subsistence of the Son, there is only one thing that we can even think of as before Him, i.e. the Father. But the Only-begotten, as He Himself has told us, is in the Father, and so, from His nature, is not open to the supposition that He ever existed not. If indeed the Father ever was not, the eternity of the Son must be cancelled retrospectively in consequence of this nothingness of the Father: but if the Father is always, how can the Son ever be non-existent, when He cannot be thought of at all by Himself apart from the Father, but is always implied silently in the name Father. …

What are God’s first words to Abraham? “Get thee out of thy country and from thy kindred unto a land that I will show thee.” The patriarch, the first to receive a promise of Christ, is here told to leave the Chaldees, to leave the city of confusion and its rehoboth or broad places; to leave also the plain of Shinar, where the tower of pride had been raised to heaven. He has to pass through the waves of this world, and to ford its rivers; those by which the saints sat down and wept when they remembered Zion, and Chebar’s flood, whence Ezekiel was carried to Jerusalem by the hair of his head. All this Abraham undergoes that he may dwell in a land of promise watered from above, and not like Egypt, from below, no producer of herbs for the weak and ailing, but a land that looks for the early and the latter rain from heaven. It is a land of hills and valleys, and stands high above the sea. …

With bread and wine Melchisedek, the priest of the most high God, received Abraham on his return from the slaughter of the Gentiles. That table pre-imaged this mystical table, just as that priest was a type and image of Christ, the true high-priest. For thou art a priest for ever after the order of Melchisedek . Of this bread the show-bread was an image. This surely is that pure and bloodless sacrifice which the Lord through the prophet said is offered to Him from the rising to the setting of the sun.

88. Let no man, therefore, when he beholds an order of human establishment, contend that in it resides the claim of Divinity; for even that Melchizedek, by whose office Abraham offered sacrifice, the Church doth certainly not hold to be an angel (as some Jewish triflers do), but a holy man and priest of God, who, prefiguring our Lord, is described as “without father or mother, without history of his descent, without beginning and without end,” in order to show beforehand the coming into this world of the eternal Son of God, Who likewise was incarnate and then brought forth without any father, begotten as God without mother, and was without history of descent, for it is written: “His generation who shall declare?”