In the period of documenting Christian scriptures and teachings, Tertullian works and theologies have a visible impact. He entered into Christianity before 197 and rendered his services for illustrating and defending the orthodox principles of the Christian faith. His works can be classified into the categories of apologetic, ethical and polemical, in which he has tried to clear the misconception and confusion of people, due to the amalgamation of Greek and Christian concepts. Tertullian's conversion to Montanism has also a significant importance in forming Christian's doctrines as then his worked was influenced by the concepts of spirits, and attaining the esoteric objective behind religious traditions and practices (Barnes).
Tertullian considered that Heretics were altering the religious teachings and scriptures to fulfill their personal desires, which is leading people towards corruption and confusion about religion and its core believes. He has mentioned it in his treatise of De Praescriptione Haereticorum, in which he defends the Rule of Faith. He argues that religion is not a source to attain material goals and comfort, but a path towards finding oneself and the reason of their existence. Hence, it cannot be guided by an individual who is seeking religion in terms of materialism (Barnes). The prevailing concept of the church being a place only assigned, or prayers was also modified by Tertullian, and describes in his Apology that it is not just a place of worship but attaining wisdom and social integration. In his later works gathered in De Carne Christi, he enlightened the concept of 'substance' and 'person', explaining how a being can be material and spiritual at the same time. Explaining this notion he addresses the authorities of God, Spirit of God and the Son of God. He exemplifies that as one person can have right over different substances, similarly Jesus Christ has the right over both humanity and divinity, and both exist in equality (Roberts).
