That's pretty easy. There's only one religion that believes Jesus was the messiah or son of God. Obviously there are many more religions in the world.
As far as more people, the one religion mentioned above is not the single largest religion in the world. I don't have the statistics in front of me but, I think there are several religions that have more followers than Christianity.
As far as I can assertain Christainity is the largest religion in the world today, just ahead of Buddhism. The vast majority of religions believe in one God. It's therefore easy to depict that "one God" as the same. So, the major religious beliefs all pray to the same God. Yet only one believes salvation comes from his son.
Now, just for fun, let's say you are Satan. And you're really pissethed that your enemy, (God), has all these followers worshiping Him, and you want to devise a plot to confuse and disrupt his superiority. What would you do?
This is not exactly what I had in mind when I started this thread.
The number 1 religion world-wide, in terms of membership, is Islam. They are much more devoted than Christians and many who claim to be Christians don't attend church. You could say that many who claim to be Christians do attend church, as well. And btw, Christianity includes Catholicism which makes up the majority of its members.
Where is the best place to wage war against your enemy, from the outside or the inside?
hmmm. i'm a major league ballplayer making more money than me and my wife and kids, and their kids, and their kids could possibly spend in their lifetimes. i have the option to make even more money where i enjoy living, play for a contender, and the community loves me. OR, i could go somewhere else, with unlimited unknowns, and make (enter your number here) more than my current club has offered me.
gee, what should i do?
These are the numbers I found in my search. I have no idea if they are accurate, or if it even matters.
World population 6.8 billion
Christianity 2 billion - 2.2 billion Buddhism 1.9 billion Islam 1.57 billion Hinduism 900 million - 1 billion Irreligion 300 - 500 million
Total 4.65 billion - 6.8 billion
Where is the beast place to wage war? I think if we're talking about God and Satan then there is no outside to consider. I might be wrong.