The competent apologist is one who witnesses to the intellectual and existential integrity of the gospel, the extraordinary message that the triune God has enabled sinners, through the cross and resurrection of Jesus Christ, to share in the divine life. It is not irrational to accept testimony, especially the compelling testimony of a life well lived. Those who speak the truth in love will find themselves not only proclaiming the passion narrative but in a sense performing it; for all who bear witness to the truth of God's wisdom - a wisdom at odds with the wisdom of this world - must be prepared to endure opposition. Knights of the Lord's Table seek to live well and, if necessary to die well in a demonstration of the wisdom of the cross. They are less conquerors than sufferers for the truth.
In the final analysis, the best apologetic is the whole people of God speaking and acting as faithful disciples of Jesus Christ, arguing, living, and dying as wise witnesses to the way, the truth and the life.
Kevin Vanhoozer, Theology and apologetics, in New Dictionary of Christian Apologetics, IVP, 2006, p. 43.