A robust and rich model of Christian thinking—the quality of thinking that culminates in a God-centered worldview—requires that we see all truth as interconnected. Ultimately, the systematic wholeness of truth can be traced to the fact that God is himself the author of all truth. Christianity is not a set of doctrines in the sense that a mechanic operates with a set of tools. Instead, Christianity is a comprehensive worldview and way of life that grows out of Christian reflection on the Bible and the unfolding plan of God revealed in the unity of the Scriptures. ...Our intentional effort to develop a Christian worldview requires us to return to first principles again and again in a constant and vigilant effort to ensure that the patterns of our thought are consistent with the Bible and its master narrative. - Al Mohler
We have much to do, starting with what goes on in our heads.