This lesson presents a robust theological and apologetic critique of Islam as a prominent biblical counterfeit, arguing that while it borrows key elements of the Christian worldview—such as monotheism, prophetic revelation, and a sacred text—it fundamentally fails to uphold the preconditions of intelligibility due to internal inconsistencies, arbitrariness, and doctrinal contradictions. The speaker emphasizes that Islam's claim to confirm earlier revelations is self-defeating, as it contradicts the biblical principle that later revelation must align with earlier divine revelation, and highlights numerous doctrinal discrepancies, including the denial of Christ's divinity, the rejection of original sin, and the absence of atonement, which undermine its moral and theological coherence. The lecture further exposes the Koran's historical and textual vulnerabilities, particularly the destruction of variant manuscripts under Caliph Uthman, which renders its claim to textual perfection arbitrary and unverifiable, in contrast to the Bible's extensive manuscript evidence. Ultimately, the argument from truth demonstrates that Islam's reliance on the Bible for legitimacy only exposes its contradictions, while the argument from folly—promised for the next session—will further dismantle its worldview by showing how its foundational claims collapse under their own weight, revealing Islam as a system that cannot account for logic, morality, or human experience in a coherent way.