The pantheon was never eliminated, and Zoroastrianism, in some sense at least, remained a polytheistic religion throughout its history, although toda… - Prods Oktor Skjaervo

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The pantheon was never eliminated, and Zoroastrianism, in some sense at least, remained a polytheistic religion throughout its history, although today the many deities have lost their individual divine character and are not worshipped for themselves but have been reinterpreted as allegories or symbols. Thus, modern Zoroastrianism is probably best described as monotheistic, certainly as monotheistic as Christianity with its Trinity and angels, though less monotheistic than Judaism and Islam.