Whenever I out myself as an atheist I am often asked if I have read the bible. It seems a strange question. Since I do not believe in any god why would I read a book that protends to prove the existence? However, I have read the bible and continue to do so; I just don't take it as anything divine or inspired by a god. As history it is only minimally reliable.
Many times believers will retort with "I know from personal experience and prayer that God exists."
This is a statement based on a feeling. Mormons call it a "burning in the bosom" . I found this website that offers information about the atheistic argument.
If this were a court of law the prosecutor (believer) must prove his case beyond a reasonable doubt. The defendent cannot prove he did not do the crime. One cannot prove a negative. The best the defense can do is create a reasonable doubt. In my case, I have much more than a reasonable doubt.