The governments of the kingdoms of Israel and Judah were based on a system that included the Jewish kings, the Jewish prophets, the legal authority of the high court of Jerusalem, the Great Sanhedrin, and the ritual authority of the priesthood. Members of the Sanhedrin had to receive their ordination ("semicha") in an uninterrupted line of transmission from Moses, yet rather than being referred to as rabbis they were called priests or scribes, like Ezra, who is called in the Bible "Ezra, the priest, the scribe, a scribe of the words of God's commandments and of His statutes unto Israel." "Rabbi" as a title does not appear in the Hebrew Bible, though later rabbinic sources occasionally use it as a title for wise Biblical figures.