It has come to the knowledge of the holy and great Synod that, in some districts and cities, the deacons administer the Eucharist to the presbyters, whereas neither canon nor custom permits that they who have no right to offer should give the Body of Christ to them that do offer. And this also has been made known, that certain deacons now touch the Eucharist even before the bishops. Let all such practices be utterly done away, and let the deacons remain within their own bounds, knowing that they are the ministers of the bishop and the inferiors of the presbyters. Let them receive the Eucharist according to their order, after the presbyters, and let either the bishop or the presbyter administer to them. Furthermore, let not the deacons sit among the presbyters, for that is contrary to canon and order. And if, after this decree, any one shall refuse to obey, let him be deposed from the diaconate. — Canon 18

The Apostles therefore, as we have said, being about to separate in order to preach the Gospel, settled upon this sign or token of their agreement in the faith; and, unlike the sons of Noah, who, when they were about to separate from one another, built a tower of baked bricks and pitch, whose top might reach to heaven, they raised a monument of faith, which might withstand the enemy, composed of living stones and pearls of the Lord, such that neither winds might overthrow it, nor floods undermine it, nor the force of storms and tempests shake it. Right justly, then, were the former, when, on the eve of separation, they built a tower of pride, condemned to the confusion of tongues, so that no one might understand his neighbour’s speech; while the latter, who were building a tower of faith, were endowed with the knowledge and understanding of all languages; so that the one might prove a sign and token of sin, the other of faith.

The doctrines of the Gospel were well known to holy and blessed David in his capacity of Prophet, and although it was under the Law that he lived his bodily life, he yet filled, as far as in him lay, the requirements of the Apostolic behest and justified the witness borne to him by God in the words: I have found a man after My own heart, David, the son of Jesse. He did not avenge himself upon his foes by war, he did not oppose force of arms to those that laid wait for him, but after the pattern of the Lord, Whose name and Whose meekness alike he foreshadowed, when he was betrayed he entreated, when he was in danger he sang psalms, when he incurred hatred he rejoiced; and for this cause he was found a man after God’s own heart. For although twelve legions of angels might have come to the help of the Lord in His hour of passion, yet that He might perfectly fulfil His service of humble obedience, He surrendered Himself to suffering and weakness, only praying with the words: Father into Your hands I commend My spirit (Luke 23:46). After the same pattern, David, whose actual sufferings prophetically foretold the future sufferings of the Lord, opposed not his enemies either by word or act; in obedience to the command of the Gospel, he would not render evil for evil, in imitation of his Master’s meekness, in his affliction, in his betrayal, in his fight, he called upon the Lord and was content to use His weapons only in his contest with the ungodly.

Here surely is an answer to your question as to what is the starting-point, and what the goal: we begin in faith, and are made perfect by sight. This also is the sum of the whole body of doctrine. But the sure and proper foundation of the catholic faith is Christ. “For other foundation,” says the apostle, “can no man lay than that is laid, which is Jesus Christ.” Nor are we to deny that this is the proper foundation of the catholic faith, because it may be supposed that some heretics hold this in common with us. For if we carefully consider the things that pertain to Christ, we shall find that, among those heretics who call themselves Christians, Christ is present in name only: in deed and in truth He is not among them. — Chapter V

For what reason, men of Greece, do you wish to bring the civil powers, as in a pugilistic encounter, into collision with us? And, if I am not disposed to comply with the usages of some of them, why am I to be abhorred as a vile miscreant? Does the sovereign order the payment of tribute, I am ready to render it. Does my master command me to act as a bondsman and to serve, I acknowledge the serfdom. Man is to be honoured as a fellow-man; God alone is to be feared,-He who is not visible to human eyes, nor comes within the compass of human art. Only when I am commanded to deny Him, will I not obey, but will rather die than show myself false and ungrateful. Our God did not begin to be in time: He alone is without beginning, and He Himself is the beginning of all things. God is a Spirit, not pervading matter, but the Maker of material spirits, and of the forms that are in matter; He is invisible, impalpable, being Himself the Father of both sensible and invisible things. Him we know from His creation, and apprehend His invisible power by His works. I refuse to adore that workmanship which He has made for our sakes. The sun and moon were made for us: how, then, can I adore my own servants? How can I speak of stocks and stones as gods? For the Spirit that pervades matter is inferior to the more divine spirit; and this, even when assimilated to the soul, is not to be honoured equally with the perfect God. Nor even ought the ineffable God to be presented with gifts; for He who is in want of nothing is not to be misrepresented by us as though He were indigent. But I will set forth our views more distinctly. — Chapter IV

For, as we must often be saying, he is one and the same, truly Son of God, and truly Son of Man. God, inasmuch as “all things were made by him, and without him nothing was made.” Man, inasmuch as he was “made of a woman, made under the law.” The nativity of the flesh is a manifestation of human nature; the Virgin’s child-bearing is an indication of Divine power. The infancy of the Babe is exhibited by the humiliation of swaddling clothes: the greatness of the Highest is declared by the voices of angels. He whom Herod impiously designs to slay is like humanity in its beginnings; but he whom the Magi rejoice to adore on their knees is Lord of all. — Council of Chalcedon (A.D. 451), Session II

Since, then, we have shown that all of us are by Scripture called children; and not only so, but that we who have followed Christ are figuratively called babes; and that the Father of all alone is perfect, for the Son is in Him, and the Father is in the Son; it is time for us in due course to say who our Instructor is.

He is called Jesus. Sometimes He calls Himself a shepherd, and says, “I am the good Shepherd.” (John 10:11) According to a metaphor drawn from shepherds, who lead the sheep, is hereby understood the Instructor, who leads the children—”the Shepherd who tends the babes. For the babes are simple, being figuratively described as sheep. “And they shall all,” it is said, “be one flock, and one shepherd.” (John 10:16) The Word, then, who leads the children to salvation, is appropriately called the Instructor (Pædagogue).

With the greatest clearness, accordingly, the Word has spoken respecting Himself by Hosea: “I am your Instructor.” Now piety is instruction, being the learning of the service of God, and training in the knowledge of the truth, and right guidance which leads to heaven. And the word “instruction” is employed variously. For there is the instruction of him who is led and learns, and that of him who leads and teaches; and there is, thirdly, the guidance itself; and fourthly, what is taught, as the commandments enjoined.

Now the instruction which is of God is the right direction of truth to the contemplation of God, and the exhibition of holy deeds in everlasting perseverance. — Book I, Chapter 7

These things, beloved, we write unto you, not merely to admonish you of your duty, but also to remind ourselves. For we are struggling on the same arena, and the same conflict is assigned to both of us. Wherefore let us give up vain and fruitless cares, and approach to the glorious and venerable rule of our holy calling. Let us attend to what is good, pleasing, and acceptable in the sight of Him who formed us. Let us look stedfastly to the blood of Christ, and see how precious that blood is to God, which, having been shed for our salvation, has set the grace of repentance before the whole world. Let us turn to every age that has passed, and learn that, from generation to generation, the Lord has granted a place of repentance to all such as would be converted unto Him. Noah preached repentance, and as many as listened to him were saved. Jonah proclaimed destruction to the Ninevites; but they, repenting of their sins, propitiated God by prayer, and obtained salvation, although they were aliens [to the covenant] of God. — Chapter VII

Hear. “Behold what manner of love the Father has given us, that we should be called sons of God, and be (1 John 3:1) (such).” For whoso are called sons, and are not sons, what profits them the name where the thing is not? How many are called physicians, who know not how to heal! how many are called watchers, who sleep all night long! So, many are called Christians, and yet in deeds are not found such; because they are not this which they are called, that is, in life, in manners, in faith, in hope, in charity. But what have ye heard here, brethren? “Behold, what manner of love the Father has bestowed upon us, that we should be called, and should be, the sons of God: therefore the world knows us not, because it has not known Him, us also the world knows not.” There is a whole world Christian, and a whole world ungodly; because throughout the whole world there are ungodly, and throughout the whole world there are godly: those know not these. — Homily IV

—And every tongue,— should —confess that Jesus Christ is Lord, to the glory of God the Father.— That is, that all should say so; and this is glory to the Father. Seest thou how wherever the Son is glorified, the Father is also glorified? Thus too when the Son is dishonored, the Father is dishonored also. If this be so with us, where the difference is great between fathers and sons, much more in respect of God, where there is no difference, doth honor and insult pass on to Him. If the world be subjected to the Son, this is glory to the Father. And so when we say that He is perfect, wanting nothing, and not inferior to the Father, this is glory to the Father, that he begat such a one. This is a great proof of His power also, and goodness, and wisdom, that He begat one no whit inferior, neither in wisdom nor in goodness. When I say that He is wise as the Father, and no whit inferior, this is a proof of the great wisdom of the Father; when I say that He is powerful as the Father, this is a proof of the Father’s power. When I say that He is good as the Father, this is the greatest evidence of His goodness, that He begat such (a Son), in no whit less or inferior to Himself. When I say that He begat Him not inferior in substance but equal, and not of another substance, in this I again wonder at God, His power, and goodness, and wisdom, that He hath manifested to us another, of Himself, such as Himself, except in His not being the Father. Thus whatsoever great things I say of the Son, pass on to the Father. Now if this small and light matter (for it is but a light thing to God’s glory that the world should worship Him) is to the glory of God, how much more so are all those other things?

Let us then believe to His glory, let us live to His glory, for one is no use without the other; when we glorify Him rightly, but live not rightly, then do we especially insult Him, because we are enrolled under Him as a Master and Teacher, and yet despise Him, and stand in no dread of that fearful judgment seat. It is no wonder that the heathen live impurely; this merits not such condemnation. But that Christians, who partake in such great mysteries, who enjoy so great glory, that they should live thus impurely, this is worst of all, and unbearable. For tell me; He was obedient to the uttermost, wherefore He received the honor which is on high. He became a servant, wherefore He is Lord of all, both of Angels, and of all other. — Homily VII.