It must then be understood that the word age has various meanings, for it denotes many things. The life of each man is called an age. Again, a period of a thousand years is called an age Arist., De Cœlo, bk. 1. text 100.. Again, the whole course of the present life is called an age: also the future life, the immortal life after the resurrection St. Matt. xii. 32; St. Luke vii. 34., is spoken of as an age. Again, the word age is used to denote, not time nor yet a part of time as measured by the movement and course of the sun, that is to say, composed of days and nights, but the sort of temporal motion and interval that is co-extensive with eternity Greg Naz., Orat. 35, 38, 42.. For age is to things eternal just what time is to things temporal.