Our righteous Father Sergius was born in Rostov, north of Moscow, about the year 1314. Named Bartholomew in Baptism, he was brought up in Radonezh, and at the death of his parents he withdrew to the wilderness to become a monk. It is notable that without having been trained in a monastery, he was of such a spiritual stature as to be able to take up the perilous eremitical life from the beginning, without falling into delusion or despondency. When he had endured with courage the deprivations of the solitary life, other monks began to come to him, for whom he was made abbot against his will. On the counsel of Philotheus, Patriarch of Constantinople, he organized his monks according to the cenobitic life, appointing duties to each. While Anthony and Theodosius of Kiev, and the other righteous Fathers before Sergius, had established their monasteries near to cities, Sergius was the leader and light of those who went far into the wilderness, and after his example the untrodden forests of northern Russia were settled with monks. When Grand Duke Demetrius Donskoy was about to go to battle against the invading Tartars, he first sought the blessing of Saint Sergius, through whose prayers he was triumphant. Saint Sergius was adorned with the highest virtues of Christ-like humility and burning love for God and neighbour, and received the gift of working wonders, of casting out demons, and of discretion for leading souls to salvation. When he served the Divine Liturgy, an Angel served with him visibly; he was also vouchsafed the visitation of the most holy Theotokos with the Apostles Peter and John. He was gathered to his Fathers on September 25, 1392. At the recovery of his holy relics on July 5, 1422, his body and garments were found fragrant and incorrupt. His life was written by the monks of Epiphanius, who knew him.

Saint Athanasius had Trebizond for his homeland. He first entered the monastic life on the mountain called Kymaeos or Kyminas, which is in Mysia of Bithynia, then he went to Mount Athos and founded a large monastery, which is known as the Great Lavra. He became so renowned for his virtue that from Rome, Calabria, Georgia, and elsewhere, rulers, men of wealth and nobility, abbots, and even bishops came to him and were subject to him. When the time for his departure was at hand, God revealed to him how it would take place, so that he was able to instruct his spiritual children not to be troubled when it should come to pass. A new church was being built for the sake of the many who came to him, and only the dome had not been finished. Together with six of the brethren, the Saint went to the top of the church to help the workmen. The dome collapsed, and they fell. Five were killed at once, and the Saint died three hours later. His holy body remained incorrupt and he worked many miracles after his death. He reposed about the end of the tenth century.