If you are a non-believer it is understandable to me. You have not read the bible, or have not tried to read it with an open mind. As SJD has said, the bible is not just one book, but 66 books written by 40 God Inspired people. To read the bible straight through it would take you 56 hours.
Now, for all of you non-believers, the key is to have an open mind here. Without automatically saying God cannot be true, try to understand that there is a very large possbility it can be true because most of the world believes in God.
Now, for me once i started to read the bible with an open mind, i found out for myself that there was just no way this book was a lie. It is the truth in every way and you cannot deny the truth.
Remember it is 66 books written by 40 different authors over a time span of 1600 years.
So for you to say its a myth or a fairy tale, you are basically saying that those 40 authors who wrote 66 books over a time-span of 1600 years are liars and were just making stuff up.
Well they werent. We are all sinners, this is a fact. Look at all the destruction and evil in the world today. All the sickness and disease. It is exactly as God knew it would be after man disobeyed God. It says that in the bible. You cannot deny that.
The thought that we came here from nothing, without any creator is ridiculous. The notion that a bunch of cells can come together from nothing and create human life and animal life is just crazy. It would be like saying the websters unabridged dictionary came about because of an explosion in a printing room or like saying a tornado can sweep through a junkyard and a boeing 757 will appear. Point is, you would need A LOT of faith to believe that happened.
The point is, if you truly seek the truth, take a look at the bible with an open mind, and decide for yourself whether or not you think the people who wrote it were being honest and sincere. I tell you, you will not be dissapointed.
I myself was skeptical about God before I started to read the Bible, but as i read with an open mind, I came to know for myself that these books were nothing that man coudlve done by himself. It is history of what happened during those times in great great detail.
You will not come to know God without hearing his word.
Faith cometh by hearing and hearing by the word of God- Rom. 10:17
Key is having an open mind, seek the truth.