Irmos: Christ is my power, my God and my Lord, the honored Church doth sing, crying out in godly manner with a pure mind, keeping festival in the Lord.
Irrigated with the streams of thy sacred teachings, O wise Isaac, multitudes of monastics splendidly produce abundant fruit: the purity of abstinence, prayerful contemplation, and the grace of dispassion, chanting: Glory to Thy power, O Thou Who lovest mankind!
Theotokion: Let us bless the Virgin as a divine temple, as a holy mountain, as a wellspring of incorruption, as the one who alone was the chosen of God our Creator.
The power of thy words hath passed through the whole world, O blessed one, driving away the blindness of men’s souls with the exalted radiance of humility.
Irmos: Thou art my strength, O Lord, Thou art my power; Thou art my God, Thou art my joy, Who, without leaving the bosom of the Father, hast visited our lowliness. Wherefore, with the Prophet Habbakuk I cry unto Thee: Glory to Thy power, O Thou Who lovest mankind!
With thy whole mind conversing and uniting thyself with the one God, the sight of Whom is beyond comprehension, O venerable one, thou wast filled past understanding with enlightenment, and wast shown to be a light-bearer, a tower of stillness and a most radiant beacon for monastics.
Theotokion: O Theotokos who gavest birth unto God in the flesh, without seed, without corruption, in manner past understanding and comprehension, thou didst annul the condemnation of Eve by thy birthgiving. Wherefore, at the hour of judgment free me also from the dread sentence.
Thou didst render thy life blameless, laving thyself with tears, O right wondrous and divinely manifest one, and describing the coming of the Judge to all by thy wise discourses.
Living in the flesh like an incorporeal being, thou didst serve God in stillness, O God-bearer Isaac, and wast vouchsafed many graces by Christ, whereof grant thou if only a small portion unto me who cry out: Glory to Thy power, O Thou Who lovest mankind!
Having beheld the all-glorious height of thy humility, the Lord gave thee exalted discourse, whereby the grievous uprisings of heresies have been brought low.
Strengthened by the grace of the Almighty, thou didst array thyself against the princes of the demons, O father, and didst vanquish them, fervently praying for us who praise thee.
Translated by Isaac Lambertsen. Edition menaion.en.lambertsen.