"...the basic presupposition..."

"In a dogmatics of the Christian Church we cannot speak correctly of God's nature and attributes unless it is presupposed that our reference is to God the Father, the Son, and the Holy Spirit. But the fact that the doctrine of the Trinity is the basic presupposition of God too is no obstacle to regarding it already as also and precisely the interpretation of revelation as such. Not as an exhaustive interpretation; to give that we should have to speak not only of the God who reveals Himself but also of the way He does it and the man to whom He does it, and we should thus stand in need of further anticipations from the area of specific doctrines; there are certain parts of christology and pneumatology that we should have to consider. What we do in fact gather from the doctrine of the Trinity is who the God is who reveals Himself, and this is why we present the doctrine here as an interpretation of revelation. ... When we say, then, that the doctrine of the Trinity is the interpretation of revelation or that revelation is the basis of the doctrine of the Trinity, we find revelation itself attested in Holy Scripture in such a way that in relation to this witness our understanding of revelation, or of the God who reveals Himself, must be the doctrine of the Trinity." CD I.1, p312