Christianity has long asserted a close relationship between the Hebrew Bible and New Testament, although there have sometimes been movements like Marcionism (viewed as heretical by the early church), that have struggled with it. Modern Christian formulations of this tension include supersessionism, covenant theology, new covenant theology, dispensationalism and dual-covenant theology. All of these formulations, except some forms of dual-covenant theology, are objectionable to mainstream Judaism and to many Jewish scholars and writers, for whom there is one eternal covenant between God and the Israelites, and who therefore reject the term "Old Testament" as a form of antinomianism.