We can prove the existence of God from the impossibility of the contrary...

"When we go to look at the different world views that atheists and theists have, I suggest we can prove the existence of God from the impossibility of the contrary. The transcendental proof for God's existence is that without Him it is impossible to prove anything. The atheist world view is irrational and cannot consistently provide the preconditions of intelligible experience, science, logic, or morality. The atheist world view cannot allow for laws of logic, the uniformity of nature, the ability for the mind to understand the world, and moral absolutes". - Dr. Greg Bahnsen

The fool hath said in his heart, There is no God. They are corrupt, they have done abominable works, there is none that doeth good. Psalm 14:1