Religion does not really save someone. It is having faith in what you believe in that can really save you
And again save you from what? Death?
Remember that Death is inevitable, what happens after that? Nothing.
Death may be prevented within the century, but religion will have nothing to do with it.
https://www.extremetech.com/extreme/265609-startup-nectome-wants-back-mind-first-killPlenty of scientists, researchers and startups are working on brain preservation. I'm sure this will bring about new religious ideologies and philosophies. People have to find meaning and purpose somehow.
Death is death, Even though you preserve a brain or clone one. It's still the same, and again death will be and always will be our end.
This researches will not nor can prevent death as far as I'm concern, it will only lengthen the suffering nor the sorrow the people.