The Roman Missal: Proper of Saints, May and June (English) 19

1[May 21. St Peter Celestine, Pope, Confessor.—Double.]
2[Mass.—Statuit ei Dominus, for a Bishop and Confessor, page xxvi, except—]
3Prayer. Deus qui beatum. O God, who didst exalt blessed Peter Celestine to the height of the supreme pontificate, and who didst teach him to prefer humility before it; mercifully grant, that by his example we may deserve to despise all worldly things, and happily to arrive at the rewards promised to the humble. Through our Lord, &c.
4[Gospel. Behold we have left all things, as in the Mass Os justi for Abbots, page xli.]