Our Father among the Saints, the Great Schema-Archimandrite Paisius (1722-1794), truly is, as this akathist says, a "chosen commander of spiritual warriors, guide and all-wondrous shepherd of monks, who through the writings of the Fathers fed our souls."  And he feeds us yet today, through his writings, his witness, and most importantly through his heavenly intercession.

What is an Akathist?  An akathist (Greek, akathistos) is a hymn dedicated to a saint, holy event, or one of the persons of the Holy Trinity. The word akathist itself means "not sitting." (Source:  https://orthodoxwiki.org/Akathist)