The Most Ancient Lives of Saint Patrick/The Life and Acts of St. Patrick/Chapter 173
Troops of Angels appear unto the Saint.
And God, the ruler of all, who after darkness bringeth light, compassionated his servant; and so soon as the evil spirits were driven forth, a multitude of angels poured around the place with exceeding brightness, and with wondrous melody they comforted the saint. And he, having finished his fast of forty days, offered the sacrifice of praise and thanksgiving unto God, who had vouchsafed to mortal man the virtue of so great abstinence, and had bestowed such mercies through the intercession of Him. And moreover he rejoiced in the angelic salutation. Then being led by the angels, he descended from the mountain, and smote his cymbal, the sound whereof the Lord caused to be heard through all parts of Hibernia. Thence, let none of the faithful doubt that every man even over the whole world will hear the sound of the last trumpet. And raising his hands, Saint Patrick blessed the island and all the dwellers therein, and commended them unto Christ.
Now understand ye how it was the custom of Patrick, as of the other ancient saints who abided in the islands, to have with them cymbals, for the expulsion of evil spirits, for their own bodily exercise, to proclaim the hours of the day and night, and for I know not what other causes. One thing, however, is certain, that many miracles are known to have been performed by the sound or the touch of these cymbals. Therefore at the Lord's Supper, the blessed Patrick going forth of his retirement into public view, rejoiced with his presence the whole church of the saints who were born of his preaching unto Christ. And there he discharged his episcopal office, the which he always joined with those sacred seasons; and thus went he forward in the work of salvation.