By St. Cyril of Jerusalem
(Catechetical Lectures 23)
Then having sanctified ourselves by these spiritual Hymns, we beseech the merciful God to send forth His Holy Spirit upon the gifts lying before Him; that He may make the Bread the Body of Christ, and the Wine the Blood of Christ ; for whatsoever the Holy Spirit has touched, is surely sanctified and changed.
Then, after the spiritual sacrifice, the bloodless service, is completed, over that sacrifice of propitiation we entreat God for the common peace of the Churches, for the welfare of the world ; for kings; for soldiers and allies; for the sick; for the afflicted; and, in a word, for all who stand in need of succor we all pray and offer this sacrifice.
Then we commemorate also those who have fallen asleep before us, first Patriarchs, Prophets, Apostles, Martyrs, that at their prayers and intercessions God would receive our petition. Then on behalf also of the Holy Fathers and Bishops who have fallen asleep before us, and in a word of all who in past years have fallen asleep among us, believing that it will be a very great benefit to the souls, for whom the supplication is put up, while that holy and most awful sacrifice is set forth.
And I wish to persuade you by an illustration. For I know that many say, what is a soul profited, which departs from this world either with sins, or without sins, if it be commemorated in the prayer? For if a king were to banish certain who had given him offense, and then those who belong to them should weave a crown and offer it to him on behalf of those under punishment, would he not grant a remission of their penalties? In the same way we, when we offer to Him our supplications for those who have fallen asleep, though they be sinners, weave no crown, but offer up Christ sacrificed for our sins, propitiating our merciful God for them as well as for ourselves.