Multiple choice general knowledge Christians believe that there is only one God. This type of belief is known as Monotheism Polytheism Theism Multitheism Reveal answer Fill a bubble to check yourself A Correct answer Explanation Monotheism is the belief in the existence of only one supreme God, as practiced in Christianity, Islam, and Judaism. Polytheism involves the worship of multiple gods, whereas theism simply refers to belief in deity without specifying a number.