Iconoclasm in Judaism
The Ten Commandments prohibit belief in, or worship of, any deities, gods, or spirits, other than the God of the Bible, the God of the patriarchs (Abraham, Isaac and Jacob). The Talmud (a commentary on the Torah – the Jewish holy book) has a treatise on idolatry. A passage in the midrash literature (records or Rabbinic Literature about how the law should be understood) states that "If one wished to write all the names of idols, all the parchment scrolls in the world would be insufficient"
When Jewish monotheism was threatened by conquering Syrians and Romans, the Jews revolted, refusing to permit Roman troops to enter their territory with flags. Jews even detected idols in the portraits of the Caesars stamped on coins, and this was understandable, in view of the divine worship paid the emperors. Despite this fear of idols and images, the danger of inroads among the Jews by idolatrous customs and usages, which permeated the whole ancient world around them, was so great that the scholars could not invent too many "fences" against idolatry. They accordingly aimed at making intimate association with gentiles very difficult.
The ancient world regarded the Jews as atheists because of their refusal to worship visible gods. "Whosoever denies idols is called a Jew" (Talmud Megilah 13). To statements such as this the Jew responded: "Whosoever recognizes idols has denied the entire Torah; and whosoever denies idols has recognized the entire Torah" (Midrash Sifre, Deut. 54 and parallel passages). "As soon as one departs from the words of the Torah, it is as though he attached himself to the worship of idols" (Midrash Sifre, Numbers 43).
In his The Guide to the Perplexed, I:36, Maimonides (a principal Jewish Scholar) holds that in the original form of idolatry, no one actually believed that their idols were gods; he states that idol-worshippers understood that their idols were only representations of a god, or God. Idols are "worshipped in respect of its being an image of a thing that is an intermediary between ourselves and God."
Maimonides, however, goes further in defining idolatry than other Jewish thinkers before or since; he states that it is idolatry to hold that God is subject to any affections at all. Not only believing that God has a body, but merely believing "that one of the states of the body belong to Him, you provoke His jealousy and anger, kindle the fire of his wrath, and are a hater, an enemy and an adversary of God, much more so than an idolator."
Maimonides spends the first one-third of the Guide attempting to show that a literalist understanding of the metaphores, idoms, and homonyms in the Hebrew Bible are idolatrous in this regard. For Maimonides, and other philosophers in the neo-Aristotelian mold, it is idolatry to believe that God has positive attributes. Maimonides' negation of positive attributes to God reaches its epitomes in the Guide I:56, where he states that "the relation between us and God, may He be exalted, is considered as non-existent."
"Know that likeness is a certain relation between two things and that in cases where no relation can be supposed to exist between two things, no likeness between them can be represented to oneself. Similarly in all cases in which there is no likeness between two things, there is no relation between them. An example of this is that one does not say that this heat is like color, or that this voice is like this sweetness. This is a matter that is clear in itself. Accordingly, in view of the fact that the relation between us and Him, may He be exalted, is considered as non-existent - I mean the relation between Him and that which is other than He - it follows necessarily that likeness between Him and us should also be considered nonexistent." (Translation by Shlomo Pines)
This is one of a number of reasons why Maimonides' writings sparked protest from the wider Jewish community for the next two centuries, a phenomenon sometimes known as The Maimonidean Controversy. Both Maimonides' supporters and opponents agreed that by his definition, many religious Jews (as well as non-Jews) were effectively (although unintentionally) idolaters. Maimonides' supporters held that the proper response was to spread Maimonides' teachings, to bring people away from idolatry and towards pure monotheism. Maimonides' opponents understood him the identical fashion, but believed him to be incorrect, and thus held that his philosophical teachings were not to be taught. In many places his works were banned.