The ontological argument asserts God, being defined as most great or perfect, must exist since a God who exists is greater than a God who does not. It is first mentioned in Anselm's work, the Proslogion. Anselm argued that reality is always better than idea.
Teleological Argument
The teleological argument states that since the universe displays such an amazing design, there must have been a divine Designer.
Cosmological Argument
Every effect must have a cause. This universe and everything in it is an effect. There must be something that caused everything to come into existence.
Moral Argument
Since everyone and every society has a sense of right and wrong there must be a moral law giver must exist.