The text examines the concept of "Christian atheism," distinguishing it from "vulgar atheism." While standard atheism denies the existence of gods and divinity altogether, Christian atheism functions as a means to fundamentally differentiate the biblical "God-not-god" of Abraham, Isaac, and Jacob from all other religious deities. The author argues that because terms like "religion" and "piety" are inherently tied to conventional notions of "god," a specific "dereligionization" is necessary to understand God not as a supreme deity, but as an entity entirely outside these categories. For this purpose, the substitute term "God-not-god" is employed, reflecting the ancient prohibition against pronouncing the divine name. Although this radical approach often encounters resistance from those adhering to traditional religious thought, the author demonstrates that it is deeply rooted in the historical tradition of negative theology, which seeks to move beyond common conceptualizations of the divine and religious frameworks.