I'm suggesting that having–constructing a vision of "the end of all things" (or "practically the end..."), and then living–preparing according to that vision, seems to be something human persons are wont to do, whether they are religious or areligious.

In the Christian vision, the important thing is to prepare by living a life in correspondence with the double-precept of charity, "love God, love your neighbor" ~ cf. Matthew 22:35-40, Matthew 25:31-46 and the preceding text, to the beginning of chapter 24; also Romans 2:1-11. Jesus describes "the end" in a manner that is quite frightening (earthquakes, wars, famines, lots of suffering), but it's clear that those who are well-prepared will be able to rejoice when all is said and done.

Those that are well prepared, or those that belong to a particular religion/denomination?

That's a big topic of discussion, probably best hashed out elsewhere, and I won't pretend to be able to simplify it.

But, for a start, take a look at the verses from the Christian Bible referenced above.

Mat 22:35-40 :: https://www.blueletterbible.org/rsv/mat/22/35/

Mat 25:31-46 :: https://www.blueletterbible.org/rsv/mat/25/31/

Mat 24:1-51 :: https://www.blueletterbible.org/rsv/mat/24/1/

Mat 25:1-30 :: https://www.blueletterbible.org/rsv/mat/25/1/

Rom 2:1-11 :: https://www.blueletterbible.org/rsv/rom/2/1/