The Most Ancient Lives of Saint Patrick/The Life and Acts of St. Patrick/Chapter 129
A Mountain is swallowed up in the Earth, and again it is raised.
And among the chiefs of Momonia was a certain wicked man named Cearbhallus, and he always hindered Saint Patrick, so that a church could not be builded in the lands of his inheritance. And not far from this man's dwelling was a lake which was fair and pleasing to the eye, but a lofty mountain which stood between intercepted all the delight from his view. Him did the saint address for the building of a church, exhorting and entreating; but long time he resisted. And on a certain day this wicked man, endeavoring with subtle argument to circumvent the saint, said unto him: "If in the name of the Lord thy God thou wilt remove yonder mountain, so that mine eyes may be freely satisfied with this desired lake, then shall thou build a church on my land wheresoever thou mayest please." This he required, because he deemed it impossible to be done. Then the saint having prayed raised his eyes of faith and love unto the prepared Mountain which is exalted on the top of the mountains; and forthwith the mountain was laid low, and swallowed in the earth, and permitted unto the man a free view of the lake. But when Saint Patrick began to build the church, this man of hardened heart would not suffer it to be finished, for he feared where no fear was, and dreaded lest thereby he should be deprived of his inheritance. Then the saint prayed again unto the Lord, and the mountain was lifted up unto its former height. And he foretold that the wicked man should in a short space lose the possession of his land, and that no one of his race should ever be a prince or a bishop. And the prophecy of the saint was fulfilled, for as his eyes were prevented from the sight of the lake, so was his life closed by death.