The intellectual foundation of the European witch trials was built upon centuries of Christian demonological thought. The concept of witchcraft as a crime against God — rather than merely a folk superstition — crystallized in the 15th century through a series of papal bulls and inquisitorial writings. Pope Innocent VIII's bull 'Summis desiderantes affectibus' (1484) officially recognized the reality of witchcraft and authorized inquisitors to prosecute it. The 'Malleus Maleficarum' (1487) provided the definitive manual. Christian demonology held that witches derived their power not from natural magic but from a pact with Satan. They were believed to attend sabbaths where they worshipped the Devil, engaged in blasphemous parodies of the Mass, and received the ability to cause harm through maleficium (harmful magic). This theological framework transformed witchcraft from a folk belief into a heresy — the worst of all crimes, since it involved apostasy from God and allegiance to His enemy. The theological nature of the charge meant that accused witches faced not merely temporal punishment but the threat of eternal damnation, adding a spiritual terror to the already devastating physical consequences of accusation.
