I used to think that the Western view of the Trinitarian relations was its Achilles’ heel. I am not so sure anymore. The Western view is still inadequate in many ways, but Western theologians were usually deeper and “on to something.” While I don’t like Augustine’s formulation, he at least has a more coherent and thought-out model of the relations between the hypostases than does the East. When I was against the Filioque, I had what I thought was a good response to the argument that what is true in the Economy is true in the Ontology. Still, Rahner’s rule wasn’t easily dismissed. Robert Jenson writes,
For it is the very function of trinitarian propositions to say that the relations that appear in the biblical narrative between Father, Son, and Spirit are the truth about God himself.