In 451, during the reign of the Sovereigns Marcian and Pulcheria, the Fourth Ecumenical Council was convoked in Chalcedon against Eutyches and those of like mind with him. After much debate, the Fathers who were the defenders of Orthodoxy, being 630 in number, agreed among themselves and with those who were of contrary mind, to write their respective definitions of faith in separate books, and to ask God to confirm the truth in this matter. When they had prepared these texts, they placed the two tomes in the case that held Saint Euphemia's relics, sealed it, and departed. After three days of night-long supplications, they opened the reliquary in the presence of the Emperor, and found the tome of the heretics under the feet of the Martyr, and that of the Orthodox in her right hand. (For her life, see Sept. 16.)

Saint Olga, renowned for her wisdom and sobriety, in her youth became the wife of Igor, Great Prince of Kiev, who ruled during the tenth century. After her husband's death, she herself ruled capably, and was finally moved to accept the Faith of Christ. She traveled to Constantinople to receive Holy Baptism. The Emperor, seeing her outward beauty and inward greatness, asked her to marry him. She said she could not do this before she was baptized; she furthermore asked him to be her Godfather at the font, which he agreed to do. After she was baptized (receiving the name of Helen), the Emperor repeated his proposal of marriage. She answered that now he was her father, through holy Baptism, and that not even among the heathen was it heard of a man marrying his daughter. Gracefully accepting to be outwitted by her, he sent her back to her land with priests and sacred texts and holy icons. Although her son Svyatoslav remained a pagan, she planted the seed of faith in her grandson Vladimir (see July 15). She reposed in peace in 969.

'The future Elder Paisius was born in 1924 and baptized by St. Arsenius of Cappadocia. He spent his youth as a carpenter until WW II, during which he repeatedly distinguished himself in the army by his bravery and self-sacrifice. In 1950 he went to Mt. Athos for eight years, where he was tonsured. Then he was asked to spend some time in his home village of Epirus, in order to defend the faithful against Protestant proselytism. He returned to Mt. Athos in 1964 and stayed in several monasteries, eventually settling in the Panagouda hermitage of Koutloumousiou Monastery, where he remained for fifteen years. Here his reputation as a holy elder and guide grew, and he tirelessly received those thirsting for spiritual direction, allowing himself only two or three hours of sleep each day. He reposed in 1994, one of the most well-known and beloved contemporary elders. Many of his counsels and other writings have been published.' (St Herman Calendar, 1994)
  Elder Païsios was glorified by the Church in 2015; he is commemorated on the anniversary of his repose.

Saint Aquila, who was from Pontus of Asia Minor, was a Jew by race and a tent-maker by trade. In the year 52 he and his wife Priscilla were in Corinth when Saint Paul first came there. They gave him hospitality, and the Apostle remained with them for many days, himself working at the same trade as they (Acts 18:2-3). And having believed in Christ through Paul, they followed him from that time on, working together with him and suffering perils with him for the sake of the preaching of the Gospel, as he himself testifies concerning them in his Epistle to the Romans, saying: "Greet Priscilla and Aquila, my helpers in Christ Jesus: who have for my life laid down their own necks: unto whom not only I give thanks, but also all the churches of the nations" (Rom. 16:3-4). When and where they reposed is unknown.

Saint Julitta was from the city of Iconium. Fearing the persecution of Diocletian, she took her son Cyricus, who was three years old, and departed for Seleucia; but finding the same evil there, she went over to Tarsus in Cilicia, where the ruler arrested her. He took her son from her and tried with flatteries to draw the youth to himself. But the little one, in his childish voice, called on the Name of Christ and kicked the ruler in the belly so hard, that the tyrant became enraged and cast him down the steps of the tribunal. In this manner, the child's head was crushed, and he gave up the spirit. As for his blessed mother, she first endured many torments, and finally was beheaded in the year 296.

Grandson of Saint Olga, Saint Vladimir ascended the throne of Kiev in 980. Though a zealous idolater, he was illumined by the grace of God, accepted the Christian Faith, and completely changed his ways. He was baptized in Cherson in 988, receiving the name Basil; he came forth from the font not only healed of a blindness lately afflicting him, but also from being passionate and warlike, he became meek, peaceable, and exceedingly godly. Whereas his grandmother had refused marriage with the Emperor in Constantinople (see July 11), he married Anna, sister of the Emperors Basil and Constantine, and was accompanied home by priests from Constantinople. Diligently seeking to spread Christianity throughout his realm like a new Constantine, he destroyed the idols (having the chief diety Perun scourged and then cast into the Dnieper River), and summoned all his subjects to Holy Baptism. He reposed in peace in 1015.

This Martyr lived during the reign of Claudius II (268-270). She was from Pisidia of Cilicia and was the only daughter of a certain priest of the idols. On being orphaned by her mother, she was handed over to a certain woman who instructed her in the Faith of Christ. When she was fifteen years old, she was apprehended by the ruler of Olmbrius, and when asked her name, homeland, and faith, she answered: "My name is Marina; I am the offspring of the Pisidia; I call upon the Name of my Lord Jesus Christ." Because of this she endured bonds, imprisonment, and many whippings, and was finally beheaded in the year 270. Saint Marina is especially invoked for deliverance from demonic possession.