Distillations of Systematic Theology
All agree that the dogmas of the Church have been derived from the Scripture. Hence it is true that ultimately systematics seeks to expound the system of truth as given in the Scriptures. It was not till after a great deal of work had been done on the Scriptures by systematic theologians that the Church was able to formulate its dogmas. The creeds of the Church are, as far as their content is concerned, no more than a systematic statement of the truth of Scripture. They are distinguished from the systematic statement of Scripture given by systematic theology (a) by their brevity, limiting themselves as they do to the most essential matters; and (b) by their authoritative character, since they have been officially accepted as standards by the councils of the Church.
Cornelius Van Til, An Introduction to Systematic Theology (The Presbyterian and Reformed Publishing Company: Phillipsburg, NJ, 1979), 3–4.