Better is one day in your courts than a thousand days (Ps 83/84, 11). Those are the courts for which the Psalmist sighed, for which he fainted away.... People desire thousands of days and long to live here. Let them scorn their thousands of days and desire that single day, that day that knows no dawn and no dusk, a single day, an eternal day, a day to which yesterday does not yield and which tomorrow does not crowd. Let us desire that one day. (En Ps 83/84, 14; PL 37, 1066-67)

This reminds me of Boethius contrast of eternity with time."Eternity is the simultaneously whole and perfect possession of interminable life." Nothing that exists in time can embrace its whole life in a moment: In its present "it does not yet grasp tomorrow but has already lost yesterday."