"Grant, we beseech thee, O Lord God, unto all thy servants, that they . . . may be delivered from present sadness [(tristitia)], and enter into the joy of thine eternal gladness [(laetitia)]."

"Concede nos famulos tuos quaesumus, domine deus, perpetua mentis et corporis sanitate gaudere et, gloriosa beatae Mariae semper virginis intercessione a praesenti liberari tristitia et futura perfrui laetitia.  Per."

     This prayer occurs in the mid-9th century Sacramentary of Modena (Modena, Biblioteca capitolare, ms O.II.7) and other later 9th-century manuscripts of the Gregorian sacramentary, and then often later on.  See Corpus orationum no. 706 (vol. 1, p. 344), which gives a number of variant readings, including aeterna for futura in Arbuth, Curia-Ott, Herford, Nivern, Sarum, and West II, none of those earlier than the 11th century (Nivern).