The calendar of saints is a traditional Christian method of organizing a liturgical year by associating each day with one or more saints and referring to the feast day of said saint. The system arose from the early Christian custom of annual commemoration of  Martyrs on the dates of their deaths, or birth into Heaven, and is thus referred to in Latin as dies natalis ("day of birth")

Matthew is mentioned as a former tax collector from Capernaum who was called to be one of Jesus’ twelve disciples.  He may have collected taxes from the Hebrew people for Herod Antipas.  According to the New Testament he was one fo the witnesses of the Resurrection and the Ascension.

Saint Matthew is the Patron Saint of accountants, bankers, bookkeepers, stock brokers and tax collectors.