Is there a mentioning (in the Bible) about why God exists? I know Christianity at a glance as I haven't read the Bible thoroughly from start to finish. I haven't found bad things Jesus taught us. But I have a crucial question to raise my confidence in believing Jesus as my savior. The question is:

Is there a mentioning (in the Bible) about why god exists?
The Bible assumes God exists. It begins with:

Genesis 1:1 ESV


  1 In the beginning, God created the heavens and the earth.


Not answering the question "Why", but simply having God as a premise.

I heard Ravi Zacharias say once. That in the Occident that we asked the question if we should believe in God, but in Orient they ask which god you believe in. In Orient they take for granted that you will believe in something.

Since the Bible was written in the Est and during an age where atheism and skepticism was not what it is today, I ,personally, find it normal that they did not answer a question that was not in their mind and in their reality. 

Since the vast majority of the people at the time of the writing of the Bible believe in some God the Bible defines God, it does not explain the reason why.