One-and-Many Solution: Applied
Now, in wrapping up our discussion on the One/Many problem from a theological point of view (precious posts have focused on the philosophical dimensions).
Review. The Christian solution to the One/Many problem makes one very important point: Only the Christian trinitarian understanding of God provides us with a good reason for accepting truths discovered by both reason (i.e. here I’m talking specifically about universals) and beliefs acquired by our five sense (particulars). Thus the Christian understanding of God solves a basic metaphysical and epistemological problem. There simply aren’t any other contenders.
How is this point made theologically? A simple, unitarian understanding of God (i.e. the belief that God is one Being, as well as only one person) makes the display of His attributes dependent on His creation, i.e. God cannot be “loving” until after he creates the world. Only then would he be able to “actualize” his love. Contrast this with the Christian position of Intra-trinitarian love, the love that the three persons of Godhead have for one another. This demonstrates the unitarian understanding of the God does not provide us with a self-sufficient God, denying His aseity. A god that is not completely self-sufficient cannot act as the final anchor for all things (as Scripture clearly states he does).
Moreover, and more pragmatically, if the preconditions for rationality are provided to us from the whole of Scripture, both OT and NT, then we should see what all of Scripture says about God, demonstrating from Scripture that God is Triune, using the historical proof-texts and exegesis for trinitarian belief. Van Til was right in saying, “In fact it then appears that the argument for the Scriptures as the infallible revelation of God is, to all intents and purposes, the same as the argument for the existence of God.”
So, while this isn’t an easy issue to master, the benefits of trinitarian belief serve as a powerful reason for why Christianity, and not traditional Judaism or Islam, gives us a worldview that makes life meaningful.