22 It was not only in Palestine and the neighbouring cities of Egypt or Syria that he was in high repute, but his fame had reached distant provinces. An officer of the Emperor Constantius whose golden hair and personal beauty revealed his country (it lay between the Saxons and the Alemanni, was of no great extent but powerful, and is known to historians as Germany, but is now called France), had long, that is to say from infancy, been pursued by a devil, who forced him in the night to howl, groan, and gnash his teeth.
He therefore secretly asked the Emperor for a post-warrant, plainly telling him why he wanted it, and having also obtained letters to the legate at Palestine came with great pomp and a large retinue to Gaza. On his inquiring of the local senators where Hilarion the monk dwelt, the people of Gaza were much alarmed, and supposing that he had been sent by the Emperor, brought him to the monastery, that they might show respect to one so highly accredited, and that, if any guilt had been incurred by them by injuries previously done by them to Hilarion it might be obliterated by their present dutifulness.
The old man at the time was taking a walk on the soft sands and was humming some passage or other from the psalms. Seeing so great a company approaching he stopped, and having returned the salutes of all while he raised his hand and gave them his blessing, after an hour's interval he bade the rest withdraw, but would have his visitor together with servants and officers remain: for by the man's eyes and countenance he knew the cause of his coming. Immediately on being questioned by the servant of God the man sprang up on tiptoe, so as scarcely to touch the ground with his feet, and with a wild roar replied in Syriac in which language he had been interrogated.
Pure Syriac was heard flowing from the lips of a barbarian who knew only French and Latin, and that without the absence of a sibilant, or an aspirate, or an idiom of the speech of Palestine. The demon then confessed by what means he had entered into him. Further, that his interpreters who knew only Greek and Latin might understand, Hilarion questioned him also in Greek, and when he gave the same answer in the same words and alleged in excuse many occasions on which spells had been laid upon him, and how he was bound to yield to magic arts, “I care not,” said the saint, “how you came to enter, but I command you in the name of our Lord Jesus Christ to come out.”
The man, as soon as he was healed, with a rough simplicity offered him ten pounds of gold. But the saint took from him only bread, and told him that they who were nourished on such food regarded gold as mire.
Source: The Life of S. Hilarion (New Advent)