And Kant showed how all were faulty.St. Thomas Aquinas (1225-1274) spelled out five proofs from reason for the existence of God. Briefly summarized, they are:
1.Motion. What is in motion must be put in motion by another and that by another again. This cannot go on to infinity. Therefore, there must be at the head of the series of movers, a being that is itself unmoved and that is the source of all movement. This prime mover is God.
2.Causation. This proof depends on the self-evident principles that nothing can exist without a sufficient reason for its existence and that every effect must have a cause. It is impossible for a thing to be the efficient cause of itself for, if it were, it would be prior to itself which is impossible. Since every effect must have a cause, that cause in turn must be the effect of another cause, and so on. But the process cannot go on to infinity. There must be a first cause that is not caused by anything else and that contains in itself the sufficient reason for its existence. That first cause is God.
3.Necessity or contingency.This proof, too, depends on the self-evident principle of sufficient reason, that is, that whatever exists must have a sufficient reason for its existence.
If there was ever a time when there was nothing, there could never be anything. From nothing, nothing can come. To explain the existence of beings that are unnecessary, that at one time did not exist, there must have always existed a necessary being, from whom beings that began to be received their existence. The existence of all other beings is contingent on the existence of this necessary being. This necessary being is God.
4.Perfection.When we perceive objects or people, we judge that they are more or less good, beautiful, kind, just, etc. But this presupposes an absolute standard of perfection with which the less perfect are compared. This absolute standard of perfection is God.
5.Design. Whatever exhibits marks of design must be the work of an intelligent being. Nobody could possibly believe that his wrist watch just "fell together." On the contrary, it was obviously designed by an intelligent designer. How much more so with the human body, the world and the universe. They all give evidence of an intelligent designer. The order of the universe, the workings of the human eye, etc., cannot be the product of chance or of some blind necessity in the nature of things. Their intelligent designer is God.
#1 assumes Aristotelian physics, which we know is incorrect.
#2 is based on causality, which we know fails at the quantum level. It also assumes that the process cannot go on to infinity. And, finally, it only shows that there are uncaused causes, not that there is a first cause (there could, for example, be many uncaused causes).
#3 is based on the flawed philosophy of necessary and contingent existence. Again, an Aristotelian viewpoint which is known to be wrong.
#4 assumes that any comparison is against a standard. This is also false. For example, we can compare the size of numbers without there being a largest number. It also assumes the idea of 'perfection' is well defined, which it isn't.
#5 is based on the idea that complexity must be produced by an intelligence, which we again know is incorrect.
Sorry, but your medieval 'proofs' simply don't hold the water you want to carry.