The Martyr Diomede was born in Cilician Tarsus, and by profession he was a physician, but by belief a Christian, and he treated not only ills not only of body but also of soul. He enlightened many pagans with belief in Christ, and baptised them. The Church venerates him as an healer and summons his name during the making of the Sacrament of Oil-Anointing the Sick.
Saint Diomede traveled much, converting people to the true faith. When he arrived in the city of Nicea, the emperor Diocletian (284-305) sent soldiers to arrest him. Along the way from Nicea to Nicomedia, he got down from the cart so as to pray, and he died. As proof of carrying out their orders, the soldiers cut off his head, but became blinded. Diocletian gave orders to take away the head back to the body. When the soldiers fulfilled the order, their sight was restored and they believed in Christ.