Look how beautiful and complex God is. Look at how powerful and wise the holy one is. None of us can really comprehend how something like this can exist naturally in life and the universe. There is no way he could exist by any other means except for Creation. A painting has a painter and a building has a builder. Therefore this shows that God has a creator.
Based on this, then the perfect thing that created God had to have a creator because it was so perfect, and blah blah blah.
God isn't because of something. Within our minds, we say that nothing is perfect; its all flawed and etc. Yet there is what is: axioms, and so forth. Things that remain, and cannot change, have not changed, and will never change. In order for there to be a set of foundations that are orderly, purposed, strong, always existing, and life giving, then something had to set the cause of these things because these things cause belief. That which is cannot be denied, and, in its own way, it is ordered: perfect.
God is a spirit, infinite, eternal, and unchangeable in His being, wisdom, power, holiness, justice, goodness, and truth.
None of those things change. Being never changes. Wisdom never changes. Power never changes. Holiness never does. Neither justice, goodness, or truth. These are what we have no control over. Sure, we try and replicate it and grasp it, but we have no say to them as to what they are.
They are outside of us. They aren't part of us, yet they govern and guide us.
If God is makable, then He is changeable and not God, and not perfect. If He is makable, then He is imagination.
And it is not that God is these attributes, it is that He is unchangeable IN them. That's what makes God a perfect God.