Monism
Judaism

Jewish thought considers God as separate from all physical, created things and as existing outside of time.

According to Maimonides, God is an incorporeal being that caused all other existence. According to Maimonides, to admit corporeality to God is tantamount to admitting complexity to God, which is a contradiction to God as the first cause and constitutes heresy. While Hasidic mystics considered the existence of the physical world a contradiction to God's simpleness, Maimonides saw no contradiction.

According to Hasidic thought (particularly as propounded by the 18th century, early 19th-century founder of Chabad, Shneur Zalman of Liadi), God is held to be immanent within creation for two interrelated reasons:

The Vilna Gaon was very much against this philosophy, for he felt that it would lead to pantheism and heresy. According to some this is the main reason for the Gaon's ban on Chasidism.
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