Monotheism

Monotheism (Greek mono- "one" + theos "god") is the worship of a single deity and the rejection that any other true gods exist and can be validly worshiped.

Monotheism sits at the most extreme end of the henotheism–monolatry–monotheism spectrum.

Monotheism is rare in Marillia. In Teresis, the only truly monotheistic religion is the Lucianus.