Irmos: The rod of Aaron is taken to be an image of the mystery, for by its budding forth it chose one priest over others; and for the Church, which before was barren, the Tree of the Cross hath now budded forth, for her might and confirmation.
Sessional hymn, in Tone IV: Spec. Mel.: “Go thou quickly before…”—
The rough stone, struck, put forth water for a disobedient and hardhearted people, and showed forth the mystery of the divinely elect Church, whereof the Cross is the might and confirmation.
When Christ’s all-pure side was pierced by the spear, blood and water flowed therefrom, renewing the covenant and washing sin away, for the Cross is the boast of the faithful, the might and confirmation of kings.
Rejoicing in thee, O thrice-blessed and life-bestowing Cross, the people celebrate together with the immaterial choirs, the ranks of hierarchs reverently hymn thee, multitudes of monastics and fasters bow down before thee in adoration, and we all glorify Christ Who was crucified on thee.
Translated by Isaac Lambertsen. Edition menaion.en.lambertsen.