You mean the Christian religion, as neither Judaism nor Islam believe in eternal torture. Judaism has a 1 year maximum time limit, and opinions on the length vary in Islam.
I find it interesting that they believe that as long as the body does not decay the person is not reborn. In Judaism embalming is discouraged because it makes it harder on the soul to disconnect from the body since as long as the body is preserved the soul thinks it's supposed to stay there (but obviously can't).
Can they not embalm the person after a natural death though? Why does it have to be by this process?
