Most of how I engage with matters of my faith and in that relate to the world around me is theological, not philosophical. As my intro to philosophy instructor put it (well, paraphrasing), theology is based on revealed knowledge, it assumes a revelation of some sort; philosophy is inquiring of knowledge. Theology presumes, philosophy inquires.
As such the foundational presupposition for how I engage the world around me is a theological one. It begins with the presumption of God and that this God has been made known, in particular, through the person of Jesus of Nazareth, confessed to be the Christ. Etc.
Which isn't to say that I don't "philosophize", I do that plenty. Getting into the how and why of what I believe is as much philosophical as it is theological.
So for example I'm not particularly convinced by philosophical "proofs" of God. While I find certain arguments interesting, for example the Ontological and Cosmological Arguments, they are less groundwork for believing and more interesting things to think about. And as such I'm more likely to think of my how/why of faith in the Kierkegaardian (and no, I'm not particularly knowledgeable of Kierkegaard's body of work) language of a "leap to faith", that faith fundamentally can't be found in reason, that faith isn't rational; it is a non rational leap.
I'm less likely therefore to think in Scholastic terms of the interplay of reason and faith. And more likely to think of reason and faith as independent; reason addresses the world that I can know rationally and empirically, faith addresses the world I can't know empirically or rationally, and which may not exist at all. So calling faith unreasonable, irrational or (as I prefer) non or trans-rational isn't bothersome to me.
It's why I'm a stickler for being exceedingly rational in my approach to matters such as science, history, etc; and simultaneously believe in those things pertaining to my religion even though there is a recognizable absence of empirical data by which to verify that such things are, in fact, objectively true.
I understand that some would call that cognitive dissonance. And maybe it is.
-CryptoLutheran