One of the more intriguing liturgies of the Church, the Greater Litanies or Processions, falls on April 25th (also the feast of St. Mark). The Greater Litanies, so called to distinguish them from the Minor Litanies - processions of lesser importance - which fall right before the Ascension, refer to a day set aside to make amends for offenses against our Good God in the form of spiritual acts of reparation, the chief being the Holy Sacrifice of the Mass preceded by a procession of supplication. During the procession, the Litany of the Saints was sung along with other prayers imploring God's mercy and blessing. Dom Prosper Gueranger, O.S.B, the great liturgical reformer of the 19th century, tells us that the custom of celebrating the Greater Litanies was already ancient by the time of Pope St. Gregory the Great.
Dom Prosper gives us the spiritual intentions underlying this liturgical tradition:
Although this liturgy has not enjoyed widespread celebration for many years, it is spiritually fruitful to reflect on this liturgy and to unite ourselves in spirit to the intention of the Church in calling the minds and hearts of the faithful to the offenses against our Lord.