Theism affirms both the existence of a transcendent God and one that is involved in Creation. Or, according to Webster's dictionary, it is "belief in the existence of one God viewed as the creative source of the human race and the world who transcends yet is immanent in the world."
Theism may be most readily understood in contrast to:
- Deism - a belief in a God, but one who is not immanent or active in the world.
- Atheism - a belief that there is no God.
- Pantheism - a belief that God is everything and everyone, and consequently, that everyone and everything is God.
- Apatheism - neither belief nor disbelief in a God, considering the issue to be unimportant.