This is the first oration of St. Gregory the Theologian (†390), given when he was a newly-ordained priest in his home town of Nazianzus. St. Gregory was ordained against his will by his father, St. Gregory of Nazianzus the Elder, to assist him and eventually take over his bishopric. Out of a sense of humility and a desire to lead a contemplative life, St. Gregory fled to Pontus, but soon returned to Nazianzus to deliver this sermon.
I adapted the translation from the Nicene and Post-Nicene Fathers to give it more of an Orthodox flavor (since the original translators were Protestants) and with comparison with the original Greek. Most of the changes are contained in the first paragraph, which now match the translations of the paschal liturgical texts, which were inspired by this oration. I also have adapted notes from the 1912 Russian edition of St. Gregory’s works.
Our Father among the Saints Gregory the Theologian, Archbishop of Constantinople
On the Holy Pascha and His Tardiness
1. It is the day of Resurrection, and an auspicious beginning. Let us be radiant for the feast, and let us embrace one another. Let us say, Brethren, even to them who hate us (Is. 66:5); much more to those who have done or suffered aught out of love for us. Let us forgive all things on the Resurrection: let us give one another pardon, I for the noble tyranny which I have suffered (for I can now call it thus); and you who exercised it, if you had cause to blame my tardiness; for perhaps this tardiness may be more precious in God’s sight than the haste of others. For it is a good thing even to hold back from God for a little while, as did the great Moses of old (Ex. 4:10), and Jeremiah later on (Jer. 1:6); and then to run readily to Him when He calls, as did Aaron (Ex. 4:27) and Isaiah (Is. 1:6), so only both be done in a dutiful spirit;—the former because of his own want of strength; the latter because of the might of Him that calleth.
2. A Mystery anointed me; I withdrew for a little while at a Mystery, as much as was needful to examine myself; now I come in with a Mystery,  bringing with me the day as a good defender of my cowardice and weakness; that He Who today rose again from the dead may renew me also by His Spirit; and, clothing me with the new man, may give me to His new creation, to those who are begotten after God, as a good modeller and teacher for Christ, willingly both dying with Him and rising again with Him.
3. Yesterday the Lamb was slain and the door-posts were anointed (Ex. 12), and Egypt bewailed her firstborn, and the destroyer passed us over, and the Seal was dreadful and reverend, and we were walled in with the precious blood. Today we have clean escaped from Egypt, from Pharaoh the bitter despot and the armed charioteers, and from clay and brick-making; there will be none to hinder us from keeping a feast to the Lord our God—the feast of our exodus—or from celebrating that feast, not in the old leaven of malice and wickedness, but in the unleavened bread of sincerity and truth (1 Cor. 5:8), carrying with us nothing of ungodly and Egyptian leaven.
4. Yesterday I was crucified with Christ, today I am glorified with Him; yesterday I died with Him, today I am quickened with Him; yesterday I was buried with Him, today I rise with Him. But let us bring forth fruit to Him Who suffered and rose again for us. You will think perhaps that I am going to say gold, or silver, or woven work or transparent and costly stones, the mere passing material of earth, that remains here below, and is for the most part always possessed by bad men, slaves of the world and of the lord of the world. Let us bring forth ourselves, the possession most precious to God, and most fitting; let us give back to the image what is made according to the image. Let us recognize our dignity, let us honour our archetype, let us know the power of the Mystery , and for what Christ died.
5. Let us become like Christ, since Christ became like us. Let us become gods for His sake, since He for ours became man. He assumed the worse that He might give us the better; He became poor that we through His poverty might be rich (2 Cor. 8:9); He took upon Him the form of a servant that we might receive back our liberty; He came down that we might be exalted; He was tempted that we might conquer; He was dishonoured that He might glorify us; He died that He might save us; He ascended that He might draw to Himself us, who were lying low in the calamity of sin. Let us give all, bring forth all, to Him Who gave Himself a ransom and a reconciliation for us. But one can give nothing like oneself, understanding the Mystery, and becoming for His sake all that He became for ours.
6. As you see, He offers you a Shepherd; for this is what your Good Shepherd , who lays down his life for his sheep, is hoping and praying for, and he asks from you his subjects; and he gives you himself double instead of single, and makes the staff of his old age a staff for your spirit. And he adds to the inanimate temple a living one ; to that exceedingly beautiful and heavenly shrine, this poor and small one, yet to him of great value, and built too with much sweat and many labours. Would that I could say it is worthy of his labours. And he places at your disposal all that belongs to him (O great generosity! —or it would be truer to say, O fatherly love!) his hoar hairs, his youth, the temple, the high priest, the testator, the heir, the discourses which you were longing for; and of these not such as are vain and poured out into the air, and which reach no further than the outward ear; but those which the Spirit writes and engraves on tables of stone, or of flesh, not merely superficially graven, nor easily to be rubbed off, but marked very deep, not with ink, but with grace.
7. These are the gifts given you by this august Abraham, this patriarch, this honourable and reverend head, this repository of all good, this standard of virtue, this perfection of the priesthood, who today is bringing to the Lord his willing sacrifice, his only son, him of the promise. Do you on your side offer to God and to us obedience to your Pastors, dwelling in a place of herbage, and being fed by water of refreshment (Ps. 23:2); knowing your Shepherd well, and being known by him (Jn. 10:14); and following when he calls you as a Shepherd frankly through the door; but not following a stranger climbing up into the fold like a robber and a traitor; nor listening to a strange voice when such would take you away by stealth and scatter you from the truth on mountains (Ez. 34:6), and in deserts, and pitfalls, and places which the Lord does not visit; and would lead you away from the sound faith in the Father, the Son, and the Holy Spirit, the one power and Godhead, Whose voice my sheep always heard (and may they always hear it), but with deceitful and corrupt words would tear them from their true Shepherd. From which may we all be kept, shepherd and flock, as from a poisoned and deadly pasture; guiding and being guided far away from it, that we may all be one in Christ Jesus, now and unto the heavenly rest. To Whom be the glory and the might unto the ages. Amen.
1. St. Gregory here uses the word mystery to refer to a feast. Thus, according to the 1912 SP edition, he was ordained on Nativity, fled on Theophany, and returned for Pascha. However, this interpretation is anachronistic, since Nativity (as a separate feast from Theophany) was not a separate holiday at this point, having been introduced to the Eastern church nearly twenty years after this oration took place.
2. This feast, Pascha.
3. Meaning his father, St. Gregory of Nazianzus the Elder.
4. Referring to himself.