The Theology of Holiness is a classic religious studies text by Dougan Clark. Science is a systematic presentation of truth. Theology is the most important of all sciences. It is the science that treats of God and of man in his relation to God. It is a systematic presentation of revealed truth. As the basis of Astronomy is the universe of worlds revealed by the telescope, and as the basis of Geology is the crust of the earth, so the basis of Theology is the Divine revelation found in the Holy Scriptures.