 While much of the Two House teaching is based on interpretations of Biblical prophecy, the biggest disagreements are due to inability to identify the genealogy of the Lost Tribes.Organizations such as the Messianic Jewish Alliance of America and Union of Messianic Jewish Congregations have explicitly opposed the Two House teaching.Historically, Christianity has taught supersessionism (replacement theology), which implies or outright states that Christianity has superseded Judaism, and that the Mosaic Covenant of the Hebrew Bible has been superseded by the New Covenant of Jesus, wherein salvation is brought about by the grace of God, and not by obedience to the Torah.