Roman Catechism 26.56

Chapter 26 — Part III: The Decalogue — The Third Commandment

Section 56. In order, therefore, to avoid offending God in this way, we should frequently ponder this word: Remember, and should place before our minds the important advantages and blessings which, as we have already seen, flow from the religious observance of holydays, and also numerous other considerations of the same tendency, which the good and zealous pastor should develop at considerable length to his people as circumstances may require.