1. Many great martyrs have prevailed over the work of the Evil Adversary because of their power in the name of the Lord, among whom the most holy martyr Theagenes has also been deemed worthy to be counted, having wrestled with the Enemy in every manner and defeated him.
2. During the time of the emperor Licinius, Theagenes, the son of a bishop, was conscripted in Phrygia and sent to the legion entitled the Second Trajan under the tribune Zelicinthius and the praepositus Posidonius. This legion was stationed in Parium in the Hellespontus, which city is superior to Cyzicus. Brought before the tribune and the praepositus, blessed Theagenes was being forced to serve as a soldier. But being faithful and accomplished in the eyes of God, filled with the Holy Spirit, he declared in the middle of the legion, "I am a Christian, and I serve the Immortal King who is the King of Kings and Lord of Lords. His soldier and servant am I, and I cannot serve another king." The tribune Zelicinthius said, "Theagenes, take the cloak, tunic and the full armour, and serve Licinius the great king". Holy Theagenes replied, "I serve my King, and I cannot serve another." Zelicinthius said, "Does Licinius not seem to you to be emperor?" Holy Theagenes replied, "I do not know. I am a Christian, and it is not possible for me to desert my Lord and King." Zelicinthius said, "What, so? Are these men standing about not Christians, and they serve?" Theagenes replied, "Each knows how he serves. For I know that I serve King and Master." Zelicinthius said, "Surely, the gods do not mock?" Theagenes replied "I do not know who are gods, except God the Almighty whom I know through His Son. [For the Holy Scripture says, "I said: You are gods, and all sons of the Most High, but you will die like men." For it calls gods the pious and faithful men who have recognised the Truth.]" Posidonius the praepositus said, "And does your God have a son?" Theagenes replied, "Yes, he has a Son, the Word of His Truth, through whom He made all things." Zelicinthius said, "If we want, can we know Him?" Theagenes replied, "Yes, if you are willing, you will quickly know Him." Posidonius said, "If we recognise Him, can we desert our emperor and surrender to him?" Theagenes said, "There is nothing which prevents you from leaving the darkness and the licence which you enjoy for a short time before your temporary and mortal emperor, and surrendering to the Living God, Eternal King, and Master of the Universe, and serving Him, just as I do and many others who have placed their hope in Him, and you will live for eternity."