Supersessionism, also called fulfillment theology and replacement theology, is the Christian theological position that the New Covenant replaces the Mosaic Covenant, which is commonly referred to as the "Old Covenant". Supersessionism views Christendom and the Christian Church as being the inheritor of the promises made to the biblical Israelites and proselytes. This position is in direct contrast with dual-covenant theology which posits that both biblical covenants still apply.

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