Hereditary (2018)

One of the most powerful things we can feel during our time on this planet is grief. Unfortunately, for this family, grief is not quite that simple. 

SOURCES

IMDB: https://www.imdb.com/title/tt7784604/

Paimon Symbolism and Necromancy: https://bloody-disgusting.com/editorials/3535054/hereditary-hidden-clues/ 

Key Information About Paimon: https://occult-world.com/paimon/