I am a proponent of an evangelical theology. ‘Evangelical’ in the sense that the starting point for theology, I contend, ought to be the Evangel or Gospel Hisself. This is contrary to the philosophical, or hard metaphysical theologies that have characterized much of the Western tradition’s theologizing for centuries (i.e., we could think of Thomas Aquinas all the 
way into Nietzsche et al.) An ‘evangelical theology’ is a kerygmatic theology; particularly when we understand that the kerygma is the pronouncement and announcement that Jesus is Lord. It is a theology of the Father who declares, “this is my dearly beloved Son, hear Him!”
Eberhard Jüngel gets at these matters in the following way:
These two tasks, to learn to think God and thought anew, cannot be separated from one another theologically. It is therefore all the more important from which of the two tasks one approaches the other one. This question, which requires initial clarification, is in actual fact the issue of the self-understanding of theology itself. The first decision to be made will have to do with the difference between philosophical and evangelical theology. A theology which is responsive to the gospel, meaning a theology which is responsive to the crucified man Jesus as the true God, knows that it is fundamentally different from something like philosophical theology in this one thing: single-mindedly and unswervingly, based on its specific task, it attempts to think God from the encounter with God, and thus to think thought anew. For Christian theology, the decision about what thought means is to be made in relation to the possibility of thinking the God who is an event. The possibility of thinking God is, for evangelical theology, not an arbitrary possibility, but rather a possibility already determined by the existence of the biblical texts and claimed already by faith in God. Theology must think God in the concrete context of a history which, beyond the momentary aspect of the “I think,” implies experiences of God which have happened and are promised.
Evangelical theology is distinguished from philosophy in that it does not desire to be lacking in presuppositions, but rather implies certain decisions in its approach to being evangelical theology. A dialogue with philosophical theology, which is really conceivable only as an argument, or a disputation with atheism, must begin accordingly with the exposition of these hermeneutical decisions of evangelical theology. Only in this way does it proceed in a precise and scientific fashion. And above all, this is the only way for it to be honest.
Evangelical theology explicates its basic decisions immediately as decisions of thought, and not solely as decisions of faith. There is a difference whether faith believes or whether thought also understands this. When thinking becomes involved with faith, it will also understand that God cannot be thought without faith. That is the initial point from which evangelical theology proceeds.[1]
Ultimately, as Juengal intones, a genuine evangelical theology is really grounded in the concrete and blood of the cross of Jesus Christ; it is a theology of the cross versus a theology of glory (i.e., philosophical theology). This is the type of theology I am a proponent of. It makes a decision to be grounded in the “hard teaching” of Jesus Christ, and to begin its theologizing only after God has spoken, and not in some sort of artifactual antecedents discovered by a profane humanity and history (i.e., philosophical theology). So, it isn’t a theology of inherent self-possession, as if postlapsarian humanity has the vestiges of an analogy of God left to them. An evangelical theology understands and takes seriously the reality that humanity, after the fall, lost all capability to think and speak God. It understands that a theology that attempts to think God, prior to encountering God in the face of Jesus Christ, can only conclude in constructing a notion of God that is ultimately a projection of the fallen self; a Superman even. Further, it understands that its theology is one of dispossession and ecstasy, in the sense that it is fully contingent upon God, unilaterally, encountering us, as event, afresh anew, by the Holy Spirit’s fresh breath hovering over us with the re-creation power of the resurrection. The only stability in an evangelical theology is grounded in the subject of theology, who is the Christ and the triune God. Evangelical theology has a vulnerability to it that is willing to be considered foolish and weak; that is based in a God willing to be misunderstood as a mere mortal, hidden in the flesh of a man from Nazareth.
I commend to you an evangelical rather than a philosophical theology. The Gospel is the power of God. The Gospel disrupts and reorientates humanity’s telos towards the God who has spoken in Jesus Christ. The Gospel is dynamic, organic, and relational. Just be an evangelical theologian already, and leave the philosophy to the philosophers.
[1] Eberhard Jüngel, God as the Mystery of the World, trans. by Darrell L. Guder (Eugene, Oregon: Wipf&Stock [reprint], 1983), 154.