Alessandro Demontis posits that Islam and Judaism share Sumerian or Akkadian origins, proposing that the Islamic god Allah is a continuation of the Akkadian moon god Sin and that the prophet Muhammad was a devotee of this deity. This theory is supported by linguistic comparisons between Akkadian, Sumerian, and Arabic terms, as well as historical connections between Medina and ancient sites associated with Sin's worship. Demontis further highlights parallels in religious symbolism, including the crescent moon, and the familial relationship between the patriarchs Abraham, Isaac, and Ishmael, linking them to the brother gods Sin and Ishkur (Yahweh). Ultimately, the author argues that these similarities indicate a shared, ancient root for both religions.