Trends come and go, Christianity is at its best when unpopular.
Christianity
There wasn't a fall of Christianity. It is still a popular religion.
Christianity is popular because it is The Truth and key to heaven.
Christianity
America
Judaism started out as more popular, then Christianity was created, and it became more popular.
Yes, Christianity is the most popular religion in the world, with over 2 billion followers worldwide.
Christianity - and the particular denomination is Catholicism
Christianity
Christianity
Christianity.
Christianity