A very good one from you,but base on my knowledge and research,both in the outside church concept and with church outstanding.

Eternity as infinite duration is an important concept in many religions, where the god or gods are said to endure eternally. Religious views of an afterlife may speak of it in terms of eternity.

[1] Some thinkers, such as Aristotle, suggest the eternity of the natural cosmos in regard to both past and future eternal duration - Christian theologians may regard immutability - like the eternal Platonic forms - as essential

[2] Today cosmologists, philosophers, and others look to analyses of the concept from across cultures and history. They debate, among other things, whether an absolute concept of eternity has real application for fundamental laws of physics - compare the issue of the arrow of time in entropy.