A depiction of the Zoroastrian god Ahura Mazda executed in glazed tile in the town of Taft, Iran.
According to Wikipedia,
"Ahura Mazdā . . . is the Avestan name for a divinity of the Old Iranian religion who was proclaimed the uncreated God by Zoroaster, the founder of Zoroastrianism."
"Ahura Mazda is described as the highest deity of worship in Zoroastrianism, along with being the first and most frequently invoked deity in the Yasna."
"Ahura Mazda is the creator and upholder of asha (truth). Ahura Mazda is an omniscient, but not an omnipotent God, however Ahura Mazda would eventually destroy evil."
"Ahura Mazda's counterpart is Angra Mainyu, the 'evil spirit' and the creator of evil who will be destroyed before frashokereti, (the destruction of evil)."