Later tonsured with his monastic name of Nikitas. He became a monk at the age or fourteen of fifteen. He served in the skete of Kafsokalyvia, in the Cell of St. George, under two spiritual fathers: Fr. Panteimon and Fr. Ionnakios. Forced by pleurisy to depart the Holy Mountain, he returned to his birthplace, where he was unexpectedly elevated to the priesthood at the age of 21 by Porphyrios III, Archbishop of Mount Sinai and Raithu. With the outbreak of World War II he became a hospital [[chaplain ]] in Athens, in which post he continued for three decades (1940-1970). His later years were devoted to the construction of the Holy Convent of the Transfiguration of the Savior. After 1984 he returned to Mount Athos, occupying the same cell which he had earlier in life been forced to abandon.