(Source) There had begun a persecution of Christians under the emperor Nero (56-68). They took the Apostle John for trial at Rome. St John was sentenced to death for his confession of faith in the Lord Jesus Christ, but the Lord preserved His chosen one. The apostle drank a cup of deadly poison, but he remained alive. Later, he emerged unharmed from a cauldron of boiling oil into which he had been thrown on orders from the torturer.
After this, they sent the Apostle John off to imprisonment to the island of Patmos, where he spent many years. Proceeding along on his way to the place of exile, St John worked many miracles. On the island of Patmos, his preaching and miracles attracted to him all the inhabitants of the island, and he enlightened them with the light of the Gospel. He cast out many devils from the pagan temples, and he healed a great multitude of the sick.
Sorcerers with demonic powers showed great hostility to the preaching of the holy apostle. He especially frightened the chief sorcerer of them all, named Kinops, who boasted that they would destroy the apostle. But the great John, by the grace of God acting through him, destroyed all the demonic artifices to which Kinops resorted, and the haughty sorcerer perished in the depths of the sea.
The Apostle John withdrew with his disciple Prochorus to a desolate height, where he imposed upon himself a three-day fast. As St John prayed the earth quaked and thunder rumbled. Prochorus fell to the ground in fright. The Apostle John lifted him up and told him to write down what he was about to say. “I am the Alpha and the Omega, the beginning and the end, saith the Lord, Who is and Who was and Who is to come, the Almighty” (Rev 1:8), proclaimed the Spirit of God through the Apostle John. Thus in about the year 67 the Book of Revelation was written, known also as the “Apocalypse,” of the holy Apostle John the Theologian. In this Book were predictions of the tribulations of the Church and of the end of the world.
After his prolonged exile, the Apostle John received his freedom and returned to Ephesus, where he continued with his activity, instructing Christians to guard against false teachers and their erroneous teachings. In the year 95, the Apostle John wrote his Gospel at Ephesus. He called for all Christians to love the Lord and one another, and by this to fulfill the commands of Christ. The Church calls St John the “Apostle of Love”, since he constantly taught that without love man cannot come near to God.
In his three Epistles, St John speaks of the significance of love for God and for neighbor. Already in his old age, he learned of a youth who had strayed from the true path to follow the leader of a band of robbers, so St John went out into the wilderness to seek him. Seeing the holy Elder, the guilty one tried to hide himself, but the Apostle John ran after him and besought him to stop. He promised to take the sins of the youth upon himself, if only he would repent and not bring ruin upon his soul. Shaken by the intense love of the holy Elder, the youth actually did repent and turn his life around.
St John reposed when he was more than a hundred years old. He far outlived the other eyewitnesses of the Lord, and for a long time he remained the only remaining eyewitness of the earthly life of the Savior.
When it was time for the departure of the Apostle John, he went out beyond the city limits of Ephesus with the families of his disciples. He bade them prepare for him a cross-shaped grave, in which he lay, telling his disciples that they should cover him over with the soil. The disciples tearfully kissed their beloved teacher, but not wanting to be disobedient, they fulfilled his bidding. They covered the face of the saint with a cloth and filled in the grave. Learning of this, other disciples of St John came to the place of his burial. When they opened the grave, they found it empty.
Each year from the grave of the holy Apostle John on May 8 came forth a fine dust, which believers gathered up and were healed of sicknesses by it. Therefore, the Church also celebrates the memory of the holy Apostle John the Theologian on May 8.
The Lord bestowed on His beloved disciple John and John’s brother James the name “Sons of Thunder” as an awesome messenger in its cleansing power of the heavenly fire. And precisely by this the Savior pointed out the flaming, fiery, sacrificial character of Christian love, the preacher of which was the Apostle John the Theologian. The eagle, symbol of the lofty heights of his theological thought, is the iconographic symbol of the Evangelist John the Theologian. The appellation “Theologian” is bestown by Holy Church only to St John among the immediate disciples and Apostles of Christ, as being the seer of the mysterious Judgments of God.