'Sect' in the Bible

Then the high priest and all those from the sect of the Sadducees who were with him were filled with jealousy. So they went out,

For we have found this man a perfect pest and an agitator among all Jews throughout the world. He is a ringleader in the sect of the Nazarenes

However, we'd like to hear from you what you believe, because people are talking against this sect everywhere."