'Age' in the Bible

who gave Himself for our sins to rescue us from this present evil age, according to the will of our God and Father.

and I was advancing in Judaism above many equals in age in mine own race, being more abundantly zealous of my fathers' deliverances,

Now what I mean [when I talk about children and their guardians] is this: as long as the heir is a child, he does not differ at all from a slave even though he is the [future owner and] master of all [the estate];