These seven holy Bishops give a vivid picture of the dangers endured by those who traveled to proclaim the Gospel of Christ in the early centuries of the Church. All seven were sent as missionary bishops to Cherson on the Black Sea, and all seven died there as Martyrs. Hermon, Bishop of Jerusalem, first sent Ephraim and Basileus; Basileus raised the son of the prince of Cherson to life, after which many believed and were baptized. The unbelievers, though, bound him by the feet and dragged him through the streets until he died. Ephraim was beheaded when he refused to make sacrifice to the idols. Eugenios, Agathodoros, and Elpidios were then sent by the Bishop of Jerusalem; they were beaten to death with rods and stones. Aetherius was sent during the reign of Constantine the Great, and was able to govern the Church in freedom and peace, and to build a church in Cherson. Capito, the last to be sent, brought the Gospel to the fierce Scythians. To prove the power of his God, they asked him to go into a burning furnace, saying that if he was not consumed, they would believe. Putting all his trust in God, the holy Bishop vested himself, made the sign of the Cross, and entered the furnace. He stood in the flames, fervently praying, for an hour, and came out untouched. The spectators cried out 'There is one God, the great and powerful God of the Christians, who keeps His servant safe in the burning furnace!', and all those in the town and the surrounding countryside were baptized. This miracle was spoken of at the Council of Nicea (325). Later, Scythian unbelievers captured Capito and drowned him in the River Dnieper.

The Prologue says that Aetherios ended his life in peace; the Great Horologion, that he was drowned. All these holy missionaries labored around the beginning of the fourth century.