Most office holders have been religious Jews, though some were secular. Haim Yosef Zadok, a secular Jew, served twice, in 1974 and 1977.[2] During his short stints, Zadok worked to streamline the operation of the rabbinical courts and strengthen relations with the religious leaders of all faiths.[2] Zerach Warhaftig was the longest serving minister, holding the post for over 12 years between 1961 and 1974. In Benjamin Netanyahu's government the portfolio changed hands six times, with four people holding the post (Netanyahu three times and Eli Suissa twice).