The moral argument is called that because it is an argument for the existence of God based on the existence of objective moral values and duties. It suggests that the existence of moral values points towards the existence of a moral lawgiver, which is typically identified as God.

The Only Possible Argument in Support of a Demonstration of the Existence of God was created in 1763.

The ontological argument is a philosophical argument for the existence of God that is based on the concept of existence or being. It suggests that the very concept of God being the greatest possible being necessarily implies his existence. This argument has been presented and debated by various philosophers throughout history, such as Anselm of Canterbury and René Descartes.

The theory that maintains that the universe exists for a reason and argues for the existence of God is known as the teleological argument or the argument from design. This argument posits that the intricate design and complexity observed in the universe suggest the existence of an intelligent designer, which is often equated with God.

The ontological argument posits that the concept of God as a perfect being necessitates His existence. It argues that if we can conceive of a being that possesses all perfections (including existence), then that being must exist in reality. Critics argue that existence is not a property that adds to the perfection of a being and that the argument relies heavily on the assumption that existence is a predicate.