This is a good example of syncopation. The organist accents the upbeats as the word, "saint," is sung three times, and this displacement of regular accents gets the attention of listeners desiring a return to predictability. The first to process down the middle of the nave are the young seminarians. Most of the congregation are young men and women steeling their future priests for battle. Priests are not here on earth to process; they hear your confession. FYI: the two points on the bishop's miter symbolize the Old and New Testaments. Miter as a transitive verb means to make a miter joint between two pieces of material, such as wood, or to make a diagonal join where the hems along two sides meet at a corner of the fabric. Incense represents prayers rising to heaven. Frankincense, myrrh, or other tree bark or sap was burned in Old Testament times and is still. Pagans ripped it off.