But biblical theology is not all the theology that will be taught at Westminster Seminary, for systematic theology will be at the very center of the seminary’s course. At this point an error should be avoided: it must not be thought that systematic theology is one whit less biblical than biblical theology is. But it differs from biblical theology in that, standing on the foundation or biblical theology, it seeks to set forth, no longer in the order of the time when it was revealed, but in the order of logical relationships, the grand sum of what God has told us in his Word. There are those who think that systematic theology on the basis of the Bible is impossible; there are those who think that the Bible contains a mere record of human seeking after God and that its teachings are a mass of contradiction which can never be resolved. But to the number of those persons we do not belong. We believe for our part that God has spoken to us in his Word, and that he has given us not merely theology, but a system of theology, a great logically consistent body of truth.

That system of theology, that body of truth, which we find in the Bible is the Reformed faith, the faith commonly called Calvinistic, which is set forth so gloriously in the Confession and catechisms of the Presbyterian church. It is sometimes referred to as a “man-made creed.” but we do not regard it as such. We regard it, in accordance with our ordination pledge as ministers in the Presbyterian church, as the creed which God has taught us in his Word. If it is contrary to the Bible, it is false. But we hold that it is not contrary to the Bible, but in accordance with the Bible, and true. We rejoice in the approximations to that body of truth which other systems of theology contain; we rejoice in our Christian fellowship with other evangelical churches; we hope that members of other churches, despite our Calvinism, may be willing to enter into Westminster Seminary as students and to listen to what we may have to say. But we cannot consent to impoverish our message by setting forth less than what we find the Scripture to contain; and we believe that we shall best serve our fellow Christians, from whatever church they may come, if we set forth not some vague greatest common measure among various creeds, but that great historic faith that has come through Augustine and Calvin to our own Presbyterian church. (“Westminster Theological Seminary,” 1929)