Legend states the St. Gregory the Great (d. 604) heard the 1st 3 strains chanted by angels on a certain Easter early morning in Rome although he walked barefoot in a great spiritual procession and that the saint thereupon extra the fourth line: “Ora pro nobis Deum. Alleluia.” This plant https://johnathanyvmeu.blazingblog.com/31244899/not-known-factual-statements-about-vita-pro-nobis