Legend states the St. Gregory The nice (d. 604) listened to the very first a few lines chanted by angels on a specific Easter morning in Rome although he walked barefoot in a great spiritual procession and that the saint thereupon included the fourth line: “Ora pro nobis Deum. Alleluia.” https://nervocure08642.humor-blog.com/30401534/rumored-buzz-on-vita-pro-nobis