Therefore, God must exist. All that I clearly and distinctly recognize as belonging to an idea really does belong to it. I have an idea of God, a supremely perfect being. Therefore God does exist. Something exists and this something must have a first cause or some sort of explanation.
Cosmological arguments deal with the existence of the universe.
We comprehend something about God by looking at the world. First Way - An argument from motion. Motion implies first mover. Everything that moves must be moved by something or someone. Must be an unmoved mover.