"At roughly the same time, on the other end of the Roman world in Syria, Ignatius, the bishop of Antioch, was considering and writing about the same topics as Clement. Ignatius had been a disciple of John, and tradition in the Eastern Orthodox Church holds that Ignatius was personally appointed by Peter to be the bishop of Antioch. Like Clement, Ignatius's concern for orthodoxy dominates his writings. Many of the most recognizable features of Christianity are described therein. Ignatius functioned as the most prolific link between the apostles and the early church, and in the words of one scholar, "his testimony must necessarily carry with it the greatest weight and demand the most serious consideration." All of Ignatius's surviving letters were written on a journey to Rome, where he would meet death by being torn to pieces by lions. Consequently, his letters to the churches around the Roman world are wrought with a desperate love and concern for his brothers and sisters. One of Ignatius's main themes is a pleading that the churches would reject the heresies that were creeping into the church. "I entreat you... not to nourish yourselves on anything but Christian fare, and have no truck with the alien barbs of heresy," he wrote. Rejection of heresy included shunning those who claimed to be Christians but adhered to false teaching: "You must keep away from these men as you would from a pack of savage animals, they are rabid curs who snap at peoples unawares, and you need to be on guard against their bites, because they are by no means easy to heal." Ignatius also emphasized the importance of the Eucharist (the Lord's Supper), declaring it the "medicine of immortality." As one who was personally instructed by at least one of the apostles, he had much to say on the subject."