"This is the glory of man: to persevere and remain in the service of God."

Orthodox Christianity

      St. Irenaeus, Adv. haer. 4.13.14 (SC 100) =4.25.1 (Harvey), as translated in the Liturgy of the hours for the Office of readings, Saturday after Ash Wednesday.  Latin from Harvey:  "Haec enim gloria hominis, persevare ac permanere in Dei servitute."