In theology, the cosmos is the created heavenly bodies (Sun, Moon, wandering stars, and fixed stars). The concept of cosmos as the created universe and its arrangement has been important in Christendom since its very inception, as it is heavily used in the New Testament and occurs over 180 times. In Christian theology, the word is sometimes used synonymously with aion to refer to "worldly life" or "this world" or "this age" as opposed to the afterlife or world to come, although "aion/aeon" is also at times used in a more other-worldly sense as the eternal plane of the divine.