Legend states the St. Gregory The nice (d. 604) listened to the first 3 strains chanted by angels on a particular Easter morning in Rome even though he walked barefoot in a great religious procession and which the saint thereupon extra the fourth line: “Ora pro nobis Deum. Alleluia.” Strengthening https://gunnervchlq.thekatyblog.com/30266124/vita-pro-nobis-an-overview