In this article, Derek Rishmawy cites Turretin and makes the point about the God of Exodus (indeed, the God of the Old Testament):
I thought it might be worth presenting a chunk of Turretin’s exposition of the divine name as a prime example of the tradition. It’s instructive in itself, not because everything in it holds up, but because many haven’t taken the time to look at what this type of argumentation looks like. Also, because it makes a key point that, whatever you do with the rest of it, still needs to be heard: ontology and character are bound up with each other. There can be no simple bifurcation between being and doing.
The etymology and signification of the word is such as agrees with God alone. From Scripture, it is evident that it implies most especially three things which are seen to be connected (Is. 44:24-26):
(a) The eternity and independence of God, inasmuch as he is a necessary being, and existing of himself, independent of any other, self-existent (autoon)–“I am that I am” (Ex. 3:14). Hence he is called simply the being (ho on, as the ancient philosophers and Plato especially acknowledged). John describes him by the three distinctions of time: “which is, and which was, and which is to come” (ho on kai ho en kai ho erchomenos, Rev. 1:4). In reference to this we have that expression of the ancient heathen: “Zeus was, Zeus is, Zeus will be, O great Zeus” (Zeus hen, Zeus esti, Zeus essetai o megale Zeu, Pausanias, Description of Greece 10.12.10).(b) It implies causality and efficiency because what is the first and most perfect in each genus is the cause of the rest (for God is by himself so that he is the cause of being to all others, Is. 44:24).(c) It implies immutability and constancy in promises because he really performs and does what he has promised by giving to his promises being (to einai), not only self-existent (autoon), but also essentially existent (ousion) and essence-making (ousiopoios). In this sense, he says that he had not been known to the patriarch by his name Jehovah (Ex. 6:3), not as to the signifying word (for the contrary is evident from the book of Genesis), but as to the thing signified (because he had not as yet given being to his promises concerning the multiplication of seed, the bringing of people out of Egypt, their introduction to Canaan, etc.).
He had made himself known to the patriarch by his power in the creation of the world, in its government and in the bestowal of many blessings and their wonderful defense; but he had not as yet really declared himself to be Jehovah, by fulfilling the promises given to the patriarchs. But since eternal existence, omnipotent power and immutable truth belong to God alone, the name Jehovah (which embraces these three) ought to be peculiar to him alone. –Institutes of Elenctic Theology Volume 1, Third Topic, Q. IV, Sec. V
As I said, there are a few things that are instructive about this passage. For one thing, the diversity of sources appealed to is always enlightening to note, simply because at certain times Christians, or especially Evangelicals, have been accused (and been guilty) of intellectual ghettoization. Turretin can comfortably appeal to pagan philosophical and literary tradition in order to supplement his point.
Even more important is the point we see in subsection “c”. Turretin engages in some theological exegesis by appealing to the acts of God, the character of God, in order to ensure the point about the being of God. As Vanhoozer has argued, metaphysics is unavoidable because we must give an account what God is like in order to account for who he has shown himself to be. What must the God who acts in this story be like in order to do and say the kinds of things we see in the biblical narrative?
In the Doctrine of God, “ontology and character are bound up with each other”. However, in Rome’s doctrine of “The Church”, ontology is the heart of Rome’s claim to being “the Church that Christ Founded™, and yet the character of its popes, bishops, and foundational characters throughout history is beside the point.
HT: Peter Escalante