 In 1857 he was called as principal of the religious school to Copenhagen, where he remained until 1865, when he was called to the rabbinate of the Congregation Anshe Chesed in New York City ("New Yorker Staats-Zeitung," 1865, No.215).When this congregation was absorbed by the Beth-El congregation, he opened a private school, which he conducted until 1879, when he received a call as professor of Talmud and rabbinical literature from the Hebrew Union College in Cincinnati.