Paul, the Apostle to the Nations, is one of the greatest ecumenical personalities in history. More specifically, he is the person who preached the Gospel to the Greeks, and through the Greeks and others, to the world, showing particular interest in the state of the Churches he founded in the Greek world. In addition to his long-standing presence and activity among Greeks, five of Paul’s Epistles are addressed to Churches of today's mainland Greece, two to Churches of Greek cities in Asia Minor, and four Epistles to three of his brothers and coworkers in Christ, who were Greeks: two to Timothy, one to Titus and one to Philemon. The Epistle to the Romans was written in Greek, as was the entire New Testament. Paul's life in Christ, his deeds and teaching, were recorded by his beloved physician and companion, Luke the Evangelist.