1....Its title is, “A Psalm for the end, to the sons of Core.” Let us understand no other end than that of which the Apostle speaks: for, “Christ is the end of the law.” Therefore when at the head of the title of the Psalm he placed the words, “for the end,” he directed our heart to Christ. If we fix our gaze on Him, we shall not stray: for He is Himself the Truth unto which we are eager to arrive, and He Himself the Way by which we run....
Source: The Enarrations, or Expositions, on the Psalms (New Advent)