Irmos: Beholding the sea of life surging with the tempest of temptations, fleeing to Thy calm haven I cry unto Thee: Lead up my life from corruption, O greatly Merciful One!
Kontakion, in Tone II: Spec. Mel.: “Seeking the highest…”—
Thou didst make thy hierarchal vestments bright by strict observance of the commandments of God, O divinely-inspired Isaac; wherefore, the Savior hath received thee as one of His own household.
Theotokion: Incarnate, He Who as God is above all noetic beings and visible creatures issued forth from thy womb, preserving thee incorrupt as thou wast before birthgiving, O Virgin Mother.
Laying thy foundation not on sands, but on the inviolate Faith, O God-bearer, guided by the hand of the Invincible One thou didst remain undaunted by all the assaults of the enemy.
Irmos: Cleanse me, O Savior, for many are my transgressions; and lead me up from the abyss of evils, I pray, for to Thee have I cried, and Thou hast hearkened to me, O God of my salvation.
Kontakion, in Tone VIII: Spec. Mel.: “To thee, the champion leader…”—
Directing thy life to the uttermost Judge, thou didst show thyself to be a true and venerable hierarch, O Isaac, revealing the commandments of the laws of grace unto all.
Theotokion: O all-pure one, who gavest birth to the transcendent God in the flesh, from the fall thou hast raised the nature of mortals to the heights of their ancient nobility; wherefore, we glorify thee.
Thy tongue was truly like the pen of a swiftly-writing scribe, evincing a most pious intellect and tracing the law of the Spirit upon the tablets of our hearts, O father.
Adorned with the spiritual wisdom which cometh from good works, thou wast shown to be a most godly teacher of monks, O Isaac, guiding us to perfection by thine instructions and deeds.
Those who navigate the calm expanse of thy dogmas, O divinely wise Ephraim, are delivered from the soul-destroying billows of the abyss and, awakening, are saved by faith from the storm of heresies.
By thine angelic way of life thou wast shown to be a divine instrument of the Comforter, and a model for monastics in all things, O blessed Isaac. As the habitation of grace divine, ask grace and heavenly light for us who cry out to thee: Rejoice, O divinely wise father!
Ever expecting the hour of judgment, thou didst bitterly lament, O Ephraim; and though a lover of stillness thou wast also a teacher of activity, O venerable one. Wherefore, O universal father, thou movest the slothful to repentance.
Ikos: An angel in ascetic labor wast thou shown to be in the flesh, O God-bearing Isaac, and by thine angelic voice hast thou set before us the words of salvation, whereby guided to a higher life, we cry out to thee: Rejoice, star out of Syria; rejoice, lamp of stillness! Rejoice, thou who art more sublime than earthly thoughts; rejoice, partaker of heavenly enlightenment! Rejoice, divinely inscribed pillar of hesychasts; rejoice, mouth flowing with the honey of spiritual teachings! Rejoice, for thou wast filled with God-given wisdom; rejoice, for thou deliverest from the evil of the passions! Rejoice, most fervent of the servants of Christ; rejoice, our godly teacher! Rejoice, wise God-bearer Isaac; rejoice, our instructor, guided by God! Rejoice, O divinely wise father!
Ikos: Of the waters of thy grace let fall a drop upon my soul, purifying it of every unclean defilement, that it may be cleansed thereof and, having spiritually completed the remaining time of a life zealous in all things, it may enjoy the divine sweetness which thou didst enjoy, wherewith thou hast watered all who burn with the passions. For, lo! by thy discourses thou movest the slothful to repentance.
Translated by Isaac Lambertsen. Edition menaion.en.lambertsen.