I like this thought from Kevin Vanhoozer on what evangelical means:

. . . The core “evangelical” conviction is that God has spoken and acted in Jesus Christ and that God speaks and acts in the canonical Scriptures that testify to him. In the beginning, God — not philosophy, not religion, not nature, not ethics, not genius, not even the church. An evangelical theology begins at the beginning with God’s speech and action. (Kevin J. Vanhoozer, The Drama Of Doctrine, 26)

To do “evangelical” theology is not to major on the minors; it is not to argue the kalam cosmological argument, it is not to speculate on a concept of Godness, it is not to figure out how man can bridge the gap from man to God, it is not to wear Birkenstocks-drive a Subura Legacy-eat granola-hug trees, it is not to save the Republic, it is not to split atoms, and it is not eating crackers and drinking grape juice. “An evangelical theology begins at the beginning . . .” with God’s eternal Word, who speaks and does the works of the Father in His economic mode (not modalism) of self-articulating Himself to us by the comm-union of the Holy Spirit.