Zealotry was a movement in first century Juaism, described by Josephus as one of the "four sects" at this time. The term Zealot, in Hebrew kanai (קנאי, frequently used in plural form, קנאים), means one who is zealous on behalf of God. The term derives from Greek ζηλωτής (zelotes), "emulator, zealous admirer or follower". The Zealots were a religious group and were frequently in rebellion.