Montanism was a Christian movement that emerged in the late 2nd century, founded by a prophet named Montanus in Phrygia, a region in modern-day Turkey. The movement emphasized direct revelations from the Holy Spirit, claiming that Montanus and his followers received new prophecies that complemented the teachings of the New Testament. Montanists advocated for a strict moral code and a heightened sense of spiritual experience, often promoting ascetic practices. The movement attracted followers but faced criticism from mainstream Christian leaders, who viewed it as a challenge to established doctrine and authority. Montanism eventually declined but influenced later Christian mysticism.