in religious philosophy
Philosophy of religion
Philosophy of religion is a branch of philosophy concerned with questions regarding religion, including the nature and existence of God, the examination of religious experience, analysis of religious language and texts, and the relationship of religion and science...

 is the belief that reason
Reason is a term that refers to the capacity human beings have to make sense of things, to establish and verify facts, and to change or justify practices, institutions, and beliefs. It is closely associated with such characteristically human activities as philosophy, science, language, ...

 and observation of the natural world
Nature, in the broadest sense, is equivalent to the natural world, physical world, or material world. "Nature" refers to the phenomena of the physical world, and also to life in general...

, without the need for organized religion, can determine that the universe
The Universe is commonly defined as the totality of everything that exists, including all matter and energy, the planets, stars, galaxies, and the contents of intergalactic space. Definitions and usage vary and similar terms include the cosmos, the world and nature...

 is the product of an all-powerful creator. According to deists, the creator does not intervene in human affairs or suspend the natural laws of the universe. Deists typically reject supernatural events such as prophecy
Prophecy is a process in which one or more messages that have been communicated to a prophet are then communicated to others. Such messages typically involve divine inspiration, interpretation, or revelation of conditioned events to come as well as testimonies or repeated revelations that the...

 and miracles, tending instead to assert that a god (or "the Supreme Architect
Great Architect of the Universe
The Great Architect of the Universe is a conception of God discussed by many Christian theologians and apologists. As a designation it is used within Freemasonry to neutrally represent whatever Supreme Being to which each member individually holds in adherence...

") does not alter the universe by intervening in it.
Unanswered Questions

Let reason count the stars, weigh the mounta1ns, fathom the depths — the employment becomes her, and the success is glorious. But when the question is, "How shall man be just with God?" reason must be silent, revelation must speak; and he who will not hear it assimilates himself to the first deist, Cain; he may not kill a brother, he certainly destroys himself.

Henry Melvill, reported in Josiah Hotchkiss Gilbert, Dictionary of Burning Words of Brilliant Writers (1895), p. 488.

[T]he Rev. R. Taylor, A.M., the Deist, now in gaol, infamously persecuted by the Whigs for his religious opinions, in his learned defense of Deism called the Diegesis, has clearly proved all the heirarchical institutions of the Christians to be a close copy of those of the Essenians of Egypt.

Godfrey Higgins, Anacalypsis (1833) pg. 787