Festal.
By our divine and saving celebrations both the down-hearted are cheered, and the joyous made yet more joyful. This I have learned by experience, for, when whelmed in the waves of despair, I have risen superior to the surge at sight of the haven of the feast. May your piety pray that I may be wholly rescued from this storm, and that our loving Lord may grant me forgetfulness of my sorrow.
Source: Letters (New Advent)