Montanus was a Christian theologian and prophet in the 2nd century AD, known for founding the Montanist movement. This movement emphasized the role of the Holy Spirit and prophetic revelations, claiming that new prophecies were being given to believers. Montanus and his followers believed in a more rigorous and ascetic lifestyle, often rejecting the established church's authority. The Montanist movement gained followers in various regions, including Asia Minor and North Africa. It was characterized by its emphasis on spiritual experiences and the imminent return of Christ. However, it faced criticism and was eventually deemed heretical by mainstream Christianity, leading to its decline.