The Albigensian Crusade or Cathar Crusade (1209–1229) was a military and ideological campaign initiated by Pope Innocent III to eliminate Catharism in Languedoc, what is now southern France. The Crusade was prosecuted primarily by the French crown and promptly took on a political aspect. It resulted in the significant reduction of practicing Cathars and a realignment of the County of Toulouse with the French crown. The distinct regional culture of Languedoc was also diminished.
Massacre against the Albigensians by the Crusaders
This Pedro Berruguete work of the 15th century depicts a story of Saint Dominic and the Albigensians, in which the texts of each were cast into a fire, but only Saint Dominic's proved miraculously resistant to the flames.
Carcassonne with the Aude river in the foreground
Cathars being expelled from Carcassonne in 1209
Gnosticism is a collection of religious ideas and systems that coalesced in the late 1st century AD among Jewish and early Christian sects. These various groups emphasized personal spiritual knowledge (gnosis) above the proto-orthodox teachings, traditions, and authority of religious institutions.
Mandaean Beth Manda (Mashkhanna) in Nasiriyah, southern Iraq in 2016, a contemporary-style mandi
A lion-faced deity found on a Gnostic gem in Bernard de Montfaucon's L'antiquité expliquée et représentée en figures may be a depiction of Yaldabaoth, the Demiurge; however, see Mithraic Zervan Akarana.
Mandaeans in prayer during baptism