The existence of God is too evident to need any arguments. Some saintly scholars have even stated that God is the most manifest being, but that those lacking insight cannot see Him. Others have said that His Self-manifestation's intensity conceals Him from direct perception.
However, the massive influence of positivism and materialism on science and on all people of recent centuries makes it necessary to discuss such arguments. As this now-prevalent "scientific" worldview reduces existence to what can be perceived directly, it blinds itself to the far vaster invisible dimensions of existence. To remove the resulting veil, we will review briefly several traditional demonstrations of God's necessary existence.
Before doing so, let's reflect on one simple historical fact: Since the beginning of human life, the overwhelming majority of humanity has believed that God exists. This belief alone is enough to establish God's existence. Unbelievers cannot claim to be smarter than believers. Some of the most innovative scientists, scholars, researchers have been-and are-believers, as are the field's experts: all Prophets and saints.
In addition, people usually confuse the 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 that requires proof. No one has ever proven God's non-existence, for to do so is impossible, whereas countless arguments prove His existence. This point may be clarified through the following comparison.
Imagine a palace with 1,000 entrances, 999 of which are open and one of which appears to be closed. Given this, it would be unreasonable to claim that the palace cannot be entered. Unbelievers are like those who, in order to assert that the palace cannot be entered, confine their (and others') attention only to the door that is seemingly closed.