OK, now that we have the obvious out of the way, and now that we have accepted that the Bible is a bestseller, what does this mean? Many Christians would have you believe that just because the Bible is so highly published that there must be truth to it. In fact you may even get told that the reason that it is so highly printed is that its Gods way of making his message heard across the entirety of mankind. Or, the reason the Bible has stood the test of time is because it is a true message that many adhere to and have seen the benefit in following.
What many people tend to forget is that even if the Bible is the best selling book ever, this does not make it true. This line of reasoning is the logical fallacy Argumentum ad populum, which includes other great rationales like fifty million cola drinkers think Pepsi is the best.
Another line of reasoning that many Christians seem to forget is that the world's dominating and colonising powers for many years came from Europe. Many of these countries not only colonised though, they also exported their breeds of Christianity which in many ways spread and asserted the Bible as true. This in turn created a new market for Bibles where there never was a market just due to sheer force. This then surely translates into a favorable market just as we would say for the Little Red Book or Quotations from Chairman Mao Tse-tung, which is another of the most published books in the world. Yet, I do not see everyone claiming that communism is clearly the only system that works as the book promoting it is has been around for many years and it has sold so many copies.
So what does the best selling book in the world mean? It simply means it has sold more copies that any other book. This does not make a book true, this does not make a book holy, it just makes it a bestseller.
Here are some other bestsellers for you to look at. And people have actually read these books from cover to cover!
150 million sales (Source)
140 million sales (Source)
107 million sales (Source)