Life and Ascetic Labors
Sources describe Sisoes as Egyptian by birth, who withdrew from the world while still young. He entered the desert of Sceté (Wadi El Natrun) and placed himself under the guidance of the abba Hor. In time he sought still deeper solitude, crossing the Nile to settle in a cave at Mount Colzim, the place where Saint Anthony the Great had lived and died.
There he remained for roughly sixty years in solitary ascetic struggle. The tradition records that he was extremely strict with himself yet merciful and compassionate toward others, welcoming all who came to him with love despite the severity of his own discipline. His ordinary work was the weaving of baskets, and he fasted frequently, at times going two days without food when absorbed in prayer.
His prayer was so fervent that it was said often to lead him into ecstatic states, and he kept his cell locked to guard his silence. The accounts attribute to him the gift of wonderworking, including the tradition that he restored a dead child to life through his prayers.