I don’t intend for this post to be long, just want to make a quick point about the relationship between historical theology and biblical evidence when we talk about the differing views of the Trinity.

I’ve seen some comments on social media and blogs that go something like this: “While I can appreciate historical points of view, what I really care about is what the Bible says.” In this scenario, historical theology is placed second to our own biblical exegesis. As a Protestant evangelical, I certainly understand and agree with the sola scriptura emphasis that lies behind these kinds of comments, but I think this is a false dichotomy.

It is a false dichotomy not because historical theology or historic interpretation is equal to Scripture – it’s not! – but because the hermeneutical warrants given by the 4th century pro-Nicenes for not only homoousion but also for eternal generation and eternal procession are absolutely crucial for our confession that YHWH is one God in three persons. In other words, you cannot get to Nicene Trinitarianism as expressed in the Nicene-Constantinopolitan Creed and further clarified at Chalcedon without the biblical interpretations given by the 4th and 5th century pro-Nicnene theologians. And, again, you cannot get to Trinitarianism per se, i.e. the confession of homoousion, of one God in three persons, without eternal generation and procession, and you cannot get to those lynchpins of Nicene Trinitarianism without the historical interpretive warrants given by Athanasius, Hilary, the Cappadocians, Augustine, Cyril of Alexandria, etc.

So when we talk about Basil’s or Augustine’s or Cyril’s or Nazianzen‘s view of a particular text, it is not merely an historical exercise that has little to do with biblical warrant. Rather, we are attempting to show that the biblical warrant given in the 4th and 5th centuries for Nicene Trinitarianism is crucial to the confession of Nicene Trinitarianism.