 This kabbalistic notion, too, was not unique to the movement and appeared frequently among other Jewish groups.While its mystical and ethical teachings are not easily sharply distinguished from those of other Jewish currents, the defining doctrine of Hasidism is that of the saintly leader, serving both as an ideal inspiration and an institutional figure around whom followers are organized.In the movement's sacral literature, this person is referred to as the "Tzaddiq", the Righteous One — often also known by the general honorific "Admor" (acronym of Hebrew for "our master, teacher and Rabbi"), granted to rabbis in general, or colloquially as "rebbe".