Zurvanism

Zurvanism is a fatalistic religious movement of Zoroastrianism in which the divinity Zurvan is a first principle (primordial creator deity) who engendered equal-but-opposite twins, Ahura Mazda and Angra Mainyu. Zurvanism is also known as "Zurvanite Zoroastrianism", and may be contrasted with Mazdaism.

In Zurvanism, Zurvan was perceived as the god of infinite time and space and also known as "one" or "alone." Zurvan was portrayed as a transcendental and neutral god without passion; one for whom there was no distinction between good and evil. The name Zurvan is a normalized rendition of the word, which in Middle Persian appears as either Zurvān, Zruvān or Zarvān. The Middle Persian name derives from Avestan (Avestan: 𐬰𐬭𐬎𐬎𐬁𐬥‎, romanized: zruuān, lit. 'time', a grammatically neuter noun).