No single document expresses the Christian Identity belief system; there is much disagreement over the doctrines which are taught by those who ascribe to CI beliefs, since there is no central organization or headquarters for the CI sect. However, all CI adherents believe that Adam and his offspring were exclusively White and the other pre-Adamite races are separate species, which cannot be either equated with or derived from the Adamites. CI adherents cite passages from the Old Testament, including , , and , which they claim contain Yahweh's injunctions against interracial marriages.