Takfir, the declaration of Muslims as apostates, opens the door to their blood being shed in the pursuit of religious purity.
Takfir Ideology: The Doctrine That Turns Muslim Against Muslim in the Name of Purity
Apostasy and Blasphemy in the Quran: Death Penalty for Leaving or Criticizing Islam
Classical Islam treats apostasy and blasphemy as punishable crimes, while biblical Christianity answers unbelief through truth, warning, and gospel witness.
