Bogomil
noun
Bo·go·mil ˌbə-gə-ˈmēl 
variants or less commonly Bogomile
: a member of a medieval Bulgarian sect holding that God has two sons, the rebellious Satan and the obedient Jesus
Word History
Etymology
Middle Greek Bogomilos, from Bogomilos Bogomil, 10th century Bulgarian priest, founder of the sect
First Known Use
1841, in the meaning defined above