We have examined four philosophical proofs for the existence of God, namely: the ontological argument (argument by logic); the cosmological argument (first cause argument); the teleological argument (argument from design) and the moral argument. None of these proofs is totally successful, neither are any of them clearly a failure. Many of the greatest intellectuals that have ever been existed have defended and rejected some of them in some way.
As a summary: The ontological argument is an argument for the existence of a perfect Being, omnipotent, omniscient and all; the cosmological argument is an argument for the existence of a Creator, eternal and uncreated; the teleological argument is an argument for the existence of Creator who is concerned over humankind; and the moral argument is an argument for a existence of a Being of moral authority.
Each of these arguments, if successful, will confirm a certain religion to the degree that it matches that religion's concept of God. If some, or perhaps all, of the arguments were successful, we would have a complete representation of the nature of God that could be compared against the concept of God depicted by every other religion. These arguments, then, might reveal to us which religion is true, or at the very least, which religion is nearest to the truth.
None of these arguments is entirely convincing when considered separately, but when taken together, it would provide evidence that there exist a perfect, essential and eternal God who created the universe with the purpose of bringing about life and who has the moral authority to command us on how we ought to be living our lives. With my chief interest being in Christianity, these evidences would be sufficient to prove that the Christian concept of God and His attributes are near to the truth. The proper response would be to seek and obey the will of God. But whether you choose to accept these arguments and their conclusions, it is up to you.
