The first important fact to be noted about historical Christianity is its fundamental distinction from Judaism even though the latter provided the ambience in which Christianity grew. Judaism is, indeed, not a religion at all but a political organisation:
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https://www.theoccidentalobserver.net/2025/11/15/kant-duhring-and-nietzsche-on-christianity-and-judaism/ ...We see therefore that a careful comparison of the firm anti-Judaism of moralistic philosophers like Kant and Dühring with Nietzsche’s denunciations of Christianity and admiration of the Old Testament of the prophets reveals that Nietzsche — though highly celebrated by European nationalists in recent times — was indeed one of the most subversive pro-Judaic, anti-Christian and anti-Germanic philosophers of the nineteenth century.
