The church has always been faced with heretical teachings. This article introduces Montanus, and his teaching known as Montanism. It shows how the church responded to it, and how it concerns the church today?

This article is about Tertullian (c. 160 to 240 A.D.). His relation to Marcion and Montanus (Montanism) is also mentioned. His importance for apologetics, and to show that Jesus Christ is God and man, is also discussed.