Presuppositional Apologetics

Presuppositional apologetics seeks to take the truth of Scripture as the proper diagnosis of the unbelieving condition and challenge the unbeliever to make sense of the world he has made, given that such a world is based on a fundamentally irrational construct ... Given any fact or experience, it asks the question as to the presuppositions behind that fact, and which make it possible. (Source: K. Scott Oliphint)

"...only the Christian worldview provides the necessary preconditions for the intelligibility of human experience.That is, only the Christian view of God, creation, providence, revelation, and human nature can make sense of the world in which we live. So, for example, only the Christian worldview can make sense out of morality since it alone provides the necessary presuppositions for making ethical evaluations, namely, an absolute and personal Law Giver who reveals His moral will to mankind. It does not make sense, however, for the atheist/materialist to denounce any action as wrong since, according to his worldview, all that exists is matter in motion. And matter in motion is inherently non-moral. That is, since the world according to the materialist is totally explicable in terms of physical processes, and since physical processes are categorically non-moral, moral considerations have no place in his worldview. Thus for the materialist to say that stealing is morally wrong makes as much sense as saying that the secretion of insulin from the pancreas is morally wrong. [This is not to say, however, that atheists never act morally. Atheists feed their children, give money to charity and often make good neighbors. But atheists cannot give a justification for their actions. In the words of Cornelius Van Til, they are living on "borrowed capital" from the Christian worldview. Thus they profess one thing, but their actions belie this profession].- Michael Butler

In defending the Christian faith, the most important question before us is "What sort of defense will best glorify our God (cf. 1 Cor. 10:31)?" God forbid that in seeking to defend the faith before others we should in that very act compromise it. The so-called "presuppositional" school of apologetics is concerned above all with answering this question. Among all the sources of divine revelation (including nature, history, human beings in God's image), Scripture plays a central role. Indeed, though the point cannot be argued in detail here, my view is that Scripture is the supremely authoritative, inerrant Word of God, the divinely authored, written constitution of the church of Jesus Christ. Scripture is therefore the foundational authority for all of human life including apologetics. As the ultimate authority, the very Word of God, it provides the foundational justifications for all our reasoning, without itself being subject to prior justification.  (Source: John Frame, Presuppositional Apologetics: An Introduction)