Periodically, Christian reform movements that have aimed at rebuilding Christian doctrine based on the Bible alone ("sola scriptura") have at least temporarily accepted polygyny as a Biblical practice. For example, during the Protestant Reformation, in a document referred to simply as ""Der Beichtrat"" (or ""The Confessional Advice"" ), Martin Luther granted the Landgrave Philip of Hesse, who, for many years, had been living "constantly in a state of adultery and fornication", a dispensation to take a second wife. The double marriage was to be done in secret, however, to avoid public scandal. Some fifteen years earlier, in a letter to the Saxon Chancellor Gregor Brück, Luther stated that he could not "forbid a person to marry several wives, for it does not contradict Scripture." (""Ego sane fateor, me non posse prohibere, si quis plures velit uxores ducere, nec repugnat sacris literis."")