Kaplan, in Open Court, August, 1902. Modern bibliography: Gedaliahu G. Stroumsa, "Aher: A Gnostic," The Rediscovery of Gnosticism Supplements to Numen XLI, ed. Bentley Layton (Leiden: E. J. Brill, 1981), II, 808–818. Alan F. Segal, Two Powers in Heaven(Leiden: E. J. Brill, 1977). 1st-century rabbis Heresy in Judaism Jewish literature Jewish skeptics Mishnah rabbis People from Jerusalem Pirkei Avot rabbis Year of birth unknown Year of death unknown Yiddish theatre