Bogomilism (Bulgarian: богомилство; Macedonian: богомилство; богумилство) was a Christian neo-Gnostic or dualist sect founded in the First Bulgarian Empire by the priest Bogomil during the reign of Tsar Peter I in the 10th century. It most probably arose in the region of Kutmichevitsa, today part of the region of Macedonia.
The Bogomils called for a return to what they considered to be early spiritual teaching, rejecting the ecclesiastical hierarchy. Their primary political tendencies were resistance to the state and church authorities. This helped the movement spread quickly in the Balkans, gradually expanding throughout the Byzantine Empire and later reaching Kievan Rus', Bosnia (Bosnian Church), Dalmatia, Serbia, Italy, and France (Cathars).
The Bogomils were dualists or Gnostics in that they believed in a world within the body and a world outside the body. They did not use the Christian cross, nor build churches, as they revered their gifted form and considered their body to be t