Complex sentence: The Body of Christ, also known as the Attleboro cult, was a small religious group founded in Attleboro, Massachusetts, which began as a Bible study group in the late 70's but became a destructive cult.
Split into simpler sentences: The Body of Christ, or the Attleboro cult, was a small religious group founded in Attleboro, Massachusetts. It began as a Bible study group in the late 1970s, but became a destructive cult.