As I see it, and probably as I've said before on this forum, I don't believe there are over 4000 religions. I believe there are just 2...and even that is not completely true. The 2 religions are , "Do" and "Done".
All religions are "Do" while Christianity is "Done".
Religion is man's attempt to find, please, placate, God or gods. Do religion offers no assurance. One never knows if one is good enough, ones works are meritous enough to outweigh our sins and misdeeds of the past. Do religion is "I hope I make it religion". Essentially we save ourselves by our own efforts.
Christianity on the other hand is done; his death and resurrection, his work on our behalf, are completely adequate to save, to sanctify and heal us and overwhelm us with the fact that we are loved and secure eternally despite our past. Our response to this grace is love out of a pure heart, and joy unspeakable. God becomes our Father and Jesus our Friend and Lord.