The lonely vigils in the church passed quickly, in spite of the weariness that assailed but could not daunt the enthusiastic scribe. One night, one of the scholars of Moville, happening to pass the door of the church, was astonished to see a bright light shining through the crevices of the door. He stooped and looked through the keyhole. Keyholes as well as keys were on a large scale in the sixth century, and he obtained a good view of the interior, and of Columba bending over the reading desk with a pile of parchment before him, copying with skilful hand the treasure of Moville. The whole chancel was shining with a brilliant light which fell directly across the page on which the writer was at work. The young man, awestruck at the sight, crept softly away, and warned his master of what was taking place. St. Finnian knew Columba's skill in transcription. He made no move until the Psalter was completed, and his old pupil was preparing to depart. Then he accused his guest of having taken a copy of his book without his permission and against his will, and claimed the work as his rightful property. This was to touch Columba in a tender spot. His nocturnal labours had cost him many weary vigils, but he had borne the weariness gladly for the sake of the prize--to give up the fruit of so much toil was more than could be expected of him. He flatly refused to yield to Finnian's claim. The old man was determined; Columba was firm; neither would give way. It was agreed in the end to appeal to the King at Tara, and to hold his judgment as final. Diarmaid might be considered as a fit judge in such a matter. The friend and patron of the great monastery of Clonmacnoise, founded by Ciaran in his presence and with his help, the King was looked upon by all the Saints of Ireland as their friend. Moreover, he was Columba's own cousin, and had treated him on a former occasion with reverence and consideration. Columba himself had no doubt that the judgment would be in his favour, and went readily at Finnian's suggestion to lay the matter before him. But Diarmaid's position on the throne was more secure than it had been in former days. He may have thought that he had less reason to fear the enmity of the Hy-Nialls of Tir-Connell. He had heard much of the sanctity of Columba, and may have supposed that in spite of his high lineage he would be ready to bear with patience an adverse judgment. He may have been actuated by the old enmity between the two branches of the family; or he may have decided according to his own conscience as he thought right and just. Be that as it may, the judgment came as a thunderclap to Columbcille. "To every cow," said the King, "belongs its own calf." Since the copy of Columba was the "son-book" of the manuscript of Moville, it belonged by rights to its mother, and therefore to Finnian.