Legend suggests the St. Gregory The good (d. 604) read the initial three lines chanted by angels on a particular Easter early morning in Rome although he walked barefoot in a fantastic spiritual procession and the saint thereupon included the fourth line: “Ora pro nobis Deum. Alleluia.” Almighty, everlasting God, https://vita-pro-nobis20864.blog-ezine.com/31232707/the-best-side-of-vita-pro-nobis