Bumper Sticker

I saw a bumper sticker today that read "If it ain't the King James, it ain't the real Bible". I had to laugh at the irony of that, considering the slang-ness of the word 'ain't' in contrast to the old English, difficult to understand language of the KJV. I doubt if the real King James ever used the word 'ain't', or whatever slang was appropriate in his day.