God shall not be tempted.

No amount of intellectual debate can prove God's existence. The only empirical evidence that a non-believer will ever see is the transformation of a person's life when he or she truly accepts Jesus Christ as their Lord and Savior. Even then, the non-believer can attribute it to something else. I can only conclude the God so strongly believes in free will that He will do nothing to violate it. He will not provide empirical data--for that would be to tempt Him.