A body of people adhering to a doctrine or to a leader and following their own beliefs. It is used of the two prominent branches of Judaism, the Pharisees and the Sadducees. Non-Christians also called Christianity a “sect” or “the sect of the Nazarenes,” possibly viewing it as a breakaway from Judaism. Sects eventually developed in the Christian congregation; “the sect of Nicolaus” is mentioned specifically in Revelation.​—Ac 5:17; 15:5; 24:5; 28:22; Re 2:6; 2Pe 2:1.