Octoechos-Friday Vespers-Tone 3, 1st Sticheron at the Aposticha
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Vesperal Stichera at the Aposticha
This is the 1st verse of the Aposticha at Vespers from the Octoechos for Friday evening, Tone 3, Prosomoion "The power of Thy cross." "The power of Thy Martyrs, O my Christ, is very great . . . ."