31 But to facilitate matters and make the project more successful, We desire that in each diocese there be held for this purpose appropriate sermons and discourses, by means of which this tenet of Christian doctrine may be more clearly explained; so that the Faith of the people may be increased and their devotion to the Virgin Mother of God become daily more ardent, and that henceforth all may take upon themselves to follow in the footsteps of our heavenly mother, willingly and with promptitude.
Source: Fulgens Corona (Vatican.va)