Many objections have been offered against doing apologetics. Some offer an attempted biblical justification. Others are based in extra-biblical reasoning. First, let’s take a look at those based on biblical texts.
Paul tailored his starting point to where the audience was. With the heathen at Lystra he began by an appeal to nature (Acts 14) and ended by preaching Jesus to them. With the Jews he began with the OT and moved on to Christ (Acts 17:2-3). But with the Greek thinkers Paul began with creation and reason to a Creator and on to His Son Jesus who died and rose again (Acts 17:24f).
What is more, the "wisdom" of which he speaks is "the wisdom of this world" (v. 20), not the wisdom of God. Paul called a sophist the "disputer of this age" (v. 20). Sophist could argue for argument's sake. This leads no one to God.
Further, Paul's reference to the world by wisdom not knowing God is not a reference to the inability of human beings to know God through the evidence He has revealed in creation (Rom. 1:19-20) and conscience (Rom. 2:12-15). Rather, it is a reference to man's depraved and foolish rejection of the message of the cross.
Finally, in this very book of 1 Corinthians Paul gives his greatest apologetic evidence for the Christian Faith--the eyewitnesses of the resurrection of Christ which his companion Luke called "many convincing proofs" (Acts 1:3 NASB).
Indeed, even though man knows clearly through human reason that God exists, nevertheless, he "suppresses" or "holds down" this truth in unrighteousness (Rom. 1:18). Thus, it is the presence of such strong evidence that leaves him “without excuse” (Rom. 1:20).
First, Paul does not say that natural persons cannot perceive truth about God, but only that they do not receive it (Gk: dekomai, welcome). Indeed, Paul emphatically declared that the basic truths about God are "clearly seen" (Rom. 1:20). The problem is not that unbelievers are not aware of God's existence but that they do not want to accept Him because of the moral consequences this would have on their sinful lives.
Second, 1 Cor. 2:14 says they do not "know" (Gk: ginosko) which can mean to know by experience. In other words, they know God in their mind (Rom. 1:19-20) but they have not accepted Him in their heart (Rom. 1:18). The Bible says, "The fool has said in his heart, `There is no God'" (Psa. 14:1).
First, the Bible does not teach that the Holy Spirit will always do this apart from reason and evidence. It is not either the Holy Spirit or Reason. Rather, it is the reasonable Holy Spirit using good reason to reach rational people. God is always the efficient cause of salvation, but apologetic arguments can be an instrumental cause used by the Holy Spirit to bring one to Christ.
Second, apologists do not believe that apologetics saves anyone. It only provides evidence in the light of which people can make rational decisions. It only provides evidence that Christianity is true. One must still place his faith in Christ in order to be saved. Apologetics only leads the "horse" to the water. Only the Holy Spirit can persuade him drink.
First, by and large the Bible was not written for unbelievers but for believers. Since they already believe in God, Christ, etc., they are already convinced these are true. Hence, apologetics is directed primarily for those who do not believe so that they may have a reason to believe.
Second, contrary to the claim of critics, apologetics is used in the Bible. 1) The first chapter of Genesis confronts the mythical accounts of creation known in that day. 2) Moses’ miracles in Egypt were an apologetic that God was speaking through him (Ex. 4:1-9). 3) Elijah did apologetics on Mt. Carmel when he proved miraculously that Yahweh is the true God, not Baal (1 Kings 18). 4) As we have shown in detail elsewhere, Jesus was constantly engaged in apologetics, proving by signs and wonders that He was the Son of God (John 3:2; Acts 2:22). 5) The Apostle Paul did apologetics at Lystra when he gave evidence from nature to the heathen that the supreme God of the universe existed and that idolatry was wrong (Acts 14). 6) The classic case of apologetics in the NT is Acts 17 where Paul reasoned with the philosophers on Mars Hill. He not only presented evidence from nature that God existed but also from history that Christ was the Son of God. Indeed, he cited pagan thinkers in support of his arguments.
Second, purely hypothetical reason itself does not tell us anything exists, including God. But since something undeniably exists (e.g., I do), then reason can tell us much about existence, including God. For instance, if something finite and contingent exists, then something infinite and necessary must exist (i.e., God). And if God exists, then it is false that He does not exist. And if God is a necessary Being, then He cannot not exist. Further, if God is Creator and we are creatures, then we are not God. Likewise, reason informs us that if God is omnipotent, then He cannot make a stone so heavy that He cannot lift it. For whatever He can make, He can lift.
First, even from a biblical point of view God calls on us to use our reason (Isa. 1:18; 1 Pet. 3:15; Matt. 22:36-37). God is a rational being, and He created us as rational beings. God would not insult the reason He gave us by asking us to ignore it in such important matters as our beliefs about Him.
Second, this position is fideistic and is self-defeating. For either it has a reason that we should not reason about God or it does not. If it does, then it defeats itself by using reason to say we should not use reason. If fideism has no reason for not using reason, then it is without reason for its position, in which case there is no reason why one should accept fideism.
Furthermore, to claim reason is just optional for a fideist will not suffice. For either the fideist offers some criteria for when we should be reasonable and when we should not, or else his view is simply arbitrary. If he offers some rational criteria for when we should be rational, then he does have a rational basis for his view, in which case he is not really a fideist after all. Reason is not the kind of thing in which a rational creature can choose to participate. By virtue of being rational by nature one must be part of rational discourse. And rational discourse demands that one follow the laws of reason.
A major contribution made by the late Francis Schaeffer was his emphasis on the need for a reasoned approach to apologetics. In his Escape from Reasonhe showed the futility of those who attempt to reject reason. He constantly chided those who make a “dichotomy between reason and non-reason.” He also criticizes those who forsake reason for a “lower story” materialism or an “upper story” mysticism.
First, if "prove" means to demonstrate with mathematical certainty, then most theists would agree that God's existence cannot be proven in this way. The reason for this is because mathematical certainty deals only with the abstract, and the existence of God (or anything else) is a matter of concrete, real existence. Mathematical certainty is based on certain axioms or postulates that must be assumed in order to get a necessary conclusion. But if God's existence must be assumed in order to be proven, then the conclusion that God exists is only based on the assumption that He exists, in which case it is not really a proof at all. Mathematical certainty is deductive in nature. It argues from given premises. But one cannot validly conclude what is not already implied in the premise(s). In this case one would have to assume God exists in the premise in order to validly infer this in the conclusion. But this begs the question.
Second, if by "prove," however, we mean "give adequate evidence for" or "provide good reasons for," then it would seem to follow that one can prove the existence of God and the truth of Christianity. Indeed, many apologists have offered such proofs and people have become Christians after reading their writings.
First of all, who ever became a believer because he thought it was irrational and absurd to do so. Certainly, the vast majority of people who believe in God or accept Christ do so because they think it is reasonable.
Second, this objection confuses two kinds of belief: belief in and belief that. Certainly, religious belief in God and in Christ is not based on evidence and reason. But neither is it done without them. Every rational person looks to see if there is evidence that the elevator has a floor before he steps in it. Likewise, all rational people want evidence that an airplane can fly before they get in it. So belief that is prior to belief in. Apologetics deals with the former. It provides evidence that God exists, that Christ is the Son of God, and that the Bible is the Word of God. A religious decision is a step of faith in the light of the evidence, not a leap of faith in the dark--in the absence of evidence.
First, it says that we should be ready. We may never run across someone who asks the tough questions about our faith, but we should still be ready just in case. But being ready is not just a matter of having the right information available, it is also an attitude of readiness and eagerness to share with others the truth of what we believe.
Second, we are to give a reason to those who ask the questions (cf. Col. 4:5-6). It is not expected that every one needs pre-evangelism, but when they do need it, we must be able and willing to give them an answer.
Finally, it links doing pre-evangelism with making Christ Lord in our hearts. If He is really Lord, then we should be obedient to Him by "destroying speculations and every lofty thing raised up against the knowledge of God, and ... taking every thought captive to the obedience of Christ" (2 Cor. 10:5). In other words we should be confronting issues in our own minds and in the expressed thoughts of others that are preventing them from knowing God. That is what apologetics is all about.
In Philippians 1:7 speaks of his mission as one of "defending and confirming the gospel." He added in verse 16, "I am put here for the defense of the gospel" (Phil 1:16). And we are put where we are to defend it as well.
Jude 3 declares: "Beloved, while making every effort to write to you about our common salvation, I felt it necessary to write to you appealing that you contend earnestly for the faith once for all given over to the saints." The people Jude was writing to had been assaulted by false teachers and he needed to encourage them to protect (literally agonize for) the faith as it had been revealed through Christ. Jude makes a significant statement about our attitude as we do this in verse 22 when he says, "have mercy on some, who are doubting." Apologetics, then, is a form of compassion.
Titus 1:9 makes knowledge of Christian evidences a requirement for church leadership. An elder in the church should be "holding fast the faithful word which is in accordance with the teaching, that he may be able both to exhort in sound doctrine and to refute those who contradict."
In 2 Timothy 2:24-25 Paul declares that "the Lord's bondservant must not be quarrelsome, but be kind to all, able to teach, patient when wronged, with gentleness correcting those who are in opposition, if perhaps God may grant them repentance leading to the knowledge of the truth." Anyone attempting to answer the questions of unbelievers will surely be wronged and be tempted to lose patience, but our ultimate goal is that they might come to a knowledge of the truth that Jesus has died for their sins.
Indeed, the command to use reason is part of the greatest command. For Jesus said, "`Love the Lord your God with all your heart and with all your soul and with all your mind.' This is the first and greatest commandment" (Matt. 22:37-38).
A fundamental principle of reason is that we should have sufficient grounds for what we believe. An unjustified belief is just that--unjustified. Being created rational creatures and not “unreasoning animals” (Jude 10 NASB), we are expected to use the reason God gave us. Socrates said, "The unexamined life is not worth living." Likewise, the unexamined faith is not worth having. Therefore, it is incumbent upon Christians "to give a reason for their hope" (1 Pet. 3:15). This is part of the great command to love God with all our mind, as well as our heart and soul (Matt. 22:36-37).
We should have evidence that something is true before we place our faith in it. For example, no rational person steps in an elevator unless he has some reason to believe it will hold him up. Likewise, no reasonable person gets on an airplane that has a broken wing and smoke coming out the tail end. Beliefthat is prior to belief in. Evidence and reason is important to establish belief that. Once this is established, one can place his faith in it. Thus, the rational person will want some evidence that God exists before he places his faith in God. Likewise, rational unbelievers will want evidence for the claim that Jesus is the Son of God before they place their trust in Him.
Second, Augustine reasoned his way out of total skepticism by seeing the self-defeating nature of it.
Third, were it not for studying Plotinus, Augustine informs us that he would not even been able to conceive of a spiritual being, let alone believe in one.
After a debate on the Moonie religion at Northwestern University in Evanston, Illinois, a Moonie girl asked some questions about Christianity. I could see that she had been convinced that the Unification Church was not teaching the truth. After talking with her briefly, I introduced her to a female seminary student who led her to Christ.
When sharing the gospel with Don Bly, he informed us that he was an atheist. After reasoning with him from atheism to open-minded agnosticism, he agreed to read Frank Morrison's book. The evidence for Christ's resurrection convinced him and we had the privilege of leading him to Christ. He has subsequently raised his family for Christ became a leader in a church south of St. Louis.
The world’s most notorious atheist wrote, “Nor do I claim to have had any personal experience of God or any experience that may be called super- natural or miraculous. In short, my discovery of the divine has been a pilgrimage of reason and not of faith.”
Noted former atheist Francis Collins said, “After twenty eight years as a believer, the Moral Law still stands out for me as the strongest signpost to God. More than that, it points to a God who cares about human beings, and a God who is infinitely good and holy.”
A college student wrote, “God sent me your book ‘I Don’t Have Enough Faith to Be an Atheist’…. I opened the book thinking I would rip it apart with my superior viewpoint and about one quarter of the way through I ended up apologizing to God and accepting him into my heart. I have since grown exponentially in Christ, and I thought I would thank you for your inspiring book.”
“I just got done reading Why I Am a Christian, and I was blown away. It is perhaps the most powerful and influential Christian book I’ve ever read. It was exactly what I was looking for. It provided the answers to the roadblocks that were guarding against my faith…. Your book pressed the red button setting off the nuclear bomb of my faith.”
*This article is a revision of a previously unpublished article called “The Need for Apologetics.”
**Unless otherwise noted, all quotations from the Bible are taken from the New International Version of the Bible (NIV).