"The angels surround and help the priest when he is celebrating Mass."
"He who devoutly hears holy Mass will receive a great vigor to enable him to resist mortal sin, and there shall be pardoned to him all venial sins which he may have committed up to that hour."
"He [who attends Mass with all possible devotion] shall be freed from sudden death, which is the most terrible stroke launched by the Divine Justice against sinners. Behold a wonderful preservative against sudden death."
St . Augustine,
Doctor of the Church