The Apostle John was especially loved by the Savior for his sacrificial love and his virginal purity. After his calling, the Apostle John did not part from the Lord, and he was one of the three apostles who were particularly close to Him. St John the Theologian was present when the Lord restored the daughter of Jairus to life, and he was a witness to the Transfiguration of the Lord on Mount Tabor.
During the Last Supper, he reclined next to the Lord, and laid his head upon His breast. He also asked the name of the Savior's betrayer. The Apostle John followed after the Lord when they led Him bound from the Garden of Gethsemane to the court of the iniquitous High Priests Annas and Caiphas. He was there in the courtyard of the High Priest during the interrogations of his Teacher and he resolutely followed after him on the way to Golgotha, grieving with all his heart.
On the fourteenth day of his journey he stood at the shore of the sea and saw that the waves had cast a man ashore. Going up to him, he recognized the Apostle John, whom the Lord had preserved alive for fourteen days in the sea. Teacher and disciple went to Ephesus, where the Apostle John preached incessantly to the pagans about Christ. His preaching was accompanied by such numerous and great miracles, that the number of believers increased with each day.
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.
Today some 200-300 metres from the point where the big ships now dock at Skala. In the dock itself, there exists a red (or orange) buoy to mark the spot where, just beneath the surface, is a submerged rock that, some people say, is man-shaped and represents the petrified magician.
The locals share the story that during World War II, the Italians sent divers down to dynamite the rock. After several attempts with an extraordinary amount of explosives nothing would have any affect. Fisherman say that any octopus that is caught near the rock are completely inedible." (taken from: http://orthodoxwiki.org/Rock_of_Kynops_%28Patmos%29)
The island of Patmos is a home to a great number of monasteries and churches, most of which are listed at the following site from the Ecumenical Patriarch: http://www.ec-patr.org/patrdisplay.php?lang=en&id=8. One of the great Elders of our times, Elder Amphilochios Makris, was the Abbot of the Monastery of St. John for many years. See the following for more information: http://www.agrino.org/cyberdesert/makris.htm, http://orthodoxwiki.org/Amphilochios_(Makris).
May St. John the Theologian, the Beloved Apostle of Christ, intercede for us and help us all!