Constantine was born on the island of Hydra in the 18th century. Born to a pious Orthodox Christian family, he left the island to the city of Rhodes in order to find work. There he worked for the Turkish governor and converted to Islam. He soon repented and returned to his Christian faith and lived on Mt Athos for a period of time as a monastic. He returned to Rhodes to confront the governor and confess his Christian faith. He died the death of a martyr by being hanged on November 14, 1800.

This Apostle, one of the Twelve, was from Bethsaida of Galilee, and was a compatriot of Andrew and Peter. He was instructed in the teachings of the Law, and devoted himself to the study of the prophetic books. Therefore, when the Lord Jesus called him to the dignity of apostleship, he immediately sought out and found Nathanael and said to him, "We have found Him of Whom Moses in the Law and the Prophets did write, Jesus of Nazareth, the son of Joseph" (John 1.45). Having preached Jesus the God-man throughout many parts of Asia Minor, and having suffered many things for His Name's sake, he was finally crucified upside down in Hierapolis of Phrygia.

The Nativity Fast is one of four main fast periods throughout the ecclesiastical year. Beginning on November 15 and concluding on December 24, the Nativity Fast gives individuals the opportunity to prepare for the Feast of the Nativity of Our Lord and Savior in the Flesh on December 25. By abstaining from certain food and drink, particularly from meat, fish, dairy products, olive oil, and wine, as well as focusing more deeply on prayer and almsgiving, we can find that the primary aim of fasting is to make us conscious of our dependence upon God.

This Apostle, who was also called Levi, was the son of Alphaeus and had Galilee as his homeland. A publican before being called by Christ, he became one of the Twelve Apostles, and an Evangelist. While still in Palestine, he wrote his Gospel first in Hebrew, being also the first of all to write the Gospel. When he is depicted in icons, there is portrayed next to him the likeness of a man, one of the symbolic living creatures mentioned by Ezekiel (1.10), which, as Saint Irenaeus writes, is a symbol of our Saviour's Incarnation.

Saint Gregory was born in Neocaesarea of Pontus to parents who were not Christians. He studied in Athens, in Alexandria, in Beirut, and finally for five years in Caesarea of Palestine under Origen, by whom he was also instructed in the Faith of Christ. Then, in the year 240, he became bishop of his own city, wherein he found only seventeen Christians. By the time the Saint reposed about the year 265, there were only seventeen unbelievers left there. Virtually the whole duration of his episcopacy was a time of continual, marvellous wonders worked by him. Because of this, he received the surname "Wonderworker"; even the enemies of the truth called him a second Moses (see Saint Basil the Great's On the Holy Spirit, ch. 29).

Saint Plato contested in martyrdom in 266, when Agrippinus was proconsul. He was from the city of Ancyra in the province of Galatia.

The Divine Scriptures do not tell us with any certainty when the Prophet Obadiah lived nor what was his homeland. Thus, some say that he is that Obadiah who was Ahab's steward, who, because of Jezebel's wrath, hid one hundred prophets in a cave and fed them with bread and water (III Kings 18:4), and that he later became a disciple of Elias the Prophet about 903 B.C. But others surmise from the words of the same prophetical book that he is somewhat later than Joel (celebrated on Oct. 19). He is also called Obdiu, or Abdiu, or Obadiah; his name means "servant of God." His book of prophecy, which consists of only one chapter, is ranked fourth among the minor Prophets.

Saint Gregory who was from Irenopolis of the Decapolis of Asia Minor, was the son of Sergius and Mary. He became a monk as a young man, and after struggling for many years in virtue and prayer under obedience to a wise spiritual father, he was informed by revelation that it was the will of God for him to live, like the Patriarch Abraham, with no certain dwelling, moving from place to place. His journeyings took him to Ephesus, Constantinople, Corinth, Rome, Sicily, Thessalonica, and again to Constantinople, where, after many labours in defence of Orthodoxy against Iconoclasm, he reposed in peace in the first half of the ninth century. He had two disciples, one of whom was Saint Joseph the Hymnographer (see Apr. 3), who wrote the Menaion service for Saint Gregory, his father in Christ.