Before doing so it is worth reflecting upon the simple historical fact that since the very beginning of human life the overwhelming majority of mankind has believed in the existence of God.

This belief alone is enough to establish God's existence. Those who do not believe in Him cannot claim that they are superior in intelligence to those who do. Among those who believe are innovative scientists scholars researchers and most importantly saints and Prophets who are as it were the experts in the field. Also worth mentioning here is the fact that people usually confuse non-acceptance of something's existence with the acceptance of its non-existence. While the former is only a negation or a rejection the latter is a judgment needing proof. No one in the world has ever been able to prove the non-existence of God and cannot do so. Whereas there are countless arguments to prove His existence. This point may be clarified through the following comparison.
Suppose there is a big palace with a thousand entrances nine hundred and ninety-nine of which are open and one appears to be closed. No one could reasonably claim that the palace couldn't be entered. The attitude of unbelievers is like that of one whom in order to assert that entrance to the palace is impossible confines his (and others') attention only to the door which is seemingly closed.