Scripture provides the most important evidence for valid conclusions about him. Useful as other forms of divine revelation might be (whether conscience, nature, or religious experience), the fulness of God’s revelation in the Bible “all but supersedes their necessity,” as Warfield put it in 1896.27 Scriptural revelation, moreover, conveys facts which the various subdivisions of theology (exegesis, biblical theology, historical theology) develop for the use of the systematician. Systematic theology