Irish Proverb?
I've been to Belfast in Northern Ireland and have witnessed the distrust between the Catholic and Protestant communities. It's quite amazing that they both actually believe in Christ and share the same Bible.
It's all words.... no substance behind any of it. Maybe some of them just enjoy hating each other?
I believe because of what I have witnessed, for which the only explaination I could find was the continued existance of the human soul after death.