that God’s revelation is the principium cognoscendi, which means “foundation or source of knowledge.” More specifically, the principium cognoscendi externum, which means, as you can see, the external principle, or foundation, or source of knowledge. What we’re saying here is that God’s revelation is the external starting point for everything that we know. And here the Reformed tradition, that tradition that came out of the Reformation, usually designates special revelation—what God says, what He