At the Aposticha, in Tone V: Spec. Mel.: “Rejoice…”—

Rejoice, O father, thou beacon of Orthodoxy, radiant sun of the Church, boast of monastics and standard of the Church, excellent teacher of goodly works, holy hierarch Gregory, abode of wisdom and understanding, instrument of the Spirit for those near and far away, inspired composer of hymnody, mouth of the Lord, who leadest the worthy away from unworthiness! Entreat Christ, that He send down upon our souls peace and great mercy.

Now & ever…: Theotokion, in the same tone—

Troparion of the holy hierarch, in Tone VIII—

Stichos: Precious in the sight of the Lord is the death of His saints.

Glory…, Now & ever…: Theotokion—

Rejoice, O Gregory, thou exalted intelligence, beholder of mysteries, vessel of the Spirit bestowed upon us, radiant lamp, splendor of divine effulgence, mighty and honorable abode of love, who art truly meek, simple and guileless, revelation and manifestation of the Scriptures, sea of divine understandings, unfathomable abyss of the teaching of the Word of God! Entreat Christ, that He send down upon our souls peace and great mercy.

Stichos: Blessed is the man that feareth the Lord; in His commandments shall he greatly delight.

Rejoice, O holy hierarch Gregory, thou abyss of theology, steadfast rule of Orthodoxy for exalting the one exalted essence of the Trinity in a single will and activity, the simple, omnipotent and uncreated Godhead, thou who by the timeless grace of the Spirit didst put to shame those who reject deification, O mouth of theologians, glory of the divine fathers who art numbered among them, beacon of the Church, who by thy supplications dost grant us great mercy!

Glory…, in Tone IV—

Having set thy life aright in godly manner, O divinely revealed Gregory, thou didst adorn thine activity with vision; for having loved wisdom with divine desire, thou wast enriched with grace by the mouth of the Spirit. And exuding the sweetness of thy words like honey from the honeycomb, thou dost ever gladden the Church of Christ with divine understandings. Wherefore, dwelling in the heavens with the holy hierarchs, pray thou unceasingly for us who celebrate thy memory.

Mercifully regard the supplications of thy servants, O all-immaculate one, quelling the uprisings of the cruel demons against us, delivering us from every sorrow; for thee alone have we as a steadfast and sure confirmation, and we have acquired thine intercession; let not us who call upon thee be put to shame, O Mistress. Haste thou to answer the entreaty of those who cry out to thee with faith: Rejoice, thou help, joy and protection of all, and salvation of our souls!

O wonderworker Gregory, instructor in Orthodoxy, adornment of holy hierarchs, invincible champion of theologians, great boast of Thessalonica, preacher of grace: Entreat Christ God, that our souls be saved.

O Good One, Who for our sake wast born of the Virgin and, having endured crucifixion, cast down death by death, and as God revealed the resurrection: Disdain not that which Thou hast fashioned with Thine own hand. Show forth Thy love for mankind, O Merciful One; accept the Theotokos who gave Thee birth and prayeth for us; and save Thy despairing people, O our Savior!