I wish I could think of a better title. Of course the Christian moral system takes place in this world, but it is ultimately concerned with the next world.
In the debate surrounding what we should rally around to save the west, it is commonly put forth that Christianity is the best way, and one of the major reasons is that it has a strong moral system that can be used to fight degeneracy.
But when I look at Christianity, I see a religion of sacrifice in deference to God, and spreading that message to new people.
You shall have no other gods before Me.
You shall make no idols.
You shall not take the name of the Lord your God in vain.
Keep the Sabbath day holy.
Honor your father and your mother.
You shall not murder.
You shall not commit adultery.
You shall not steal.
You shall not bear false witness against your neighbor.
You shall not covet.
1-4 are clearly about establishing that their God is the true god and worshiping him will be occupying at least 40% of your moral system.
6-10 are fine enough, but hardly robust. You could read into them greatly, but they aren't brain surgery, just some basic guidelines for an orderly society. I'll admit, even that is somewhat biased toward the west, but enough to save it? I'm not sure, because these 6 are almost perfectly reflected in our modern laws, which don't seem to be helping.
OK, now let's look at Jesus whose teachings are the basis of Christianity.
https://relevantmagazine.com/current16/heres-what-jesus-meant-when-he-said-sell-everything-and-give-it-poor/
He clarified that we should focus all our earthly energies into helping the poor and spreading the word. All other questions can be addressed by one filter: deference to and faith in God.
- Where will you live: Trust in God. You need no material comfort.
- How will I eat: Trust in God. This why we have charity.
- If I'm in bad health: Trust in God. If you die, you will go to heaven.
- If I am stolen from: Trust in God. They will be judged in the end.
- If my neighborhood is flooded with non-Christans: Trust in God. Keep spreading the word.
- If the West falls into a sea of degeneracy, and the Christian faith is forgotten due to sheer numbers of animalistic peoples out-propagating the keepers of the faith: TRUST IN GOD. What happens in this world is not in your hands, but God's. Just make sure YOU are right with him, and the rest will happen according to his plan. Even if that plan of course includes the total cleansing of the earth again.
This can go on forever. There is no imperative for preservation of self or civilization. There is only pure deference to God.
This is seems to me an extremely weak position to attack the things going on in this world, because ultimately, a Christian isn't supposed to worry about that. I submit that any reading beyond that basic tenet is ex post facto and not required by the religion.
(Sorry to only submit one source to teachings. I was raised Catholic and do have some inherent knowledge, although far from perfect.)