I think Kevin Vanhoozer shows the beauty and utility of Doctrine for Discipleship:
"Doctrine gives direction to disciples on the way. Is this direction a matter of metaphysics or morality? It is both; the way of wisdom transcends the dichotomy between a merely theoretical metaphysics and a merely practical morality. The directive theory of doctrine thus requires some reference to reality - call it 'theodramatic correspondence' or 'theodramatic realism' - where reality is defined not merely in terms of God's triune being-in-act. Theology aims at promoting theodramatic correspondence: a way of speaking, thinking and living that is not only 'according to the Scriptures' but a way that is 'according' to the real - God's creative, communicative and recreative activity, as revealed in the history of Jesus Christ."
p. 50, "Once More into the Borderlands: The Way of Wisdom in Philosophy and Theology after the 'Turn to Drama'" in Transcending Boundaries in Philosophy and Theology: Reason Meaning, and Experience ed. Kevin Vanhoozer and Martin Warner, Ashgate Publishing, 2007.