One of the most common debate tactics from both sides of the Creation-evolution debate is the fallacy of the ad ignorantiam question. For an Atheist who is depending on his or her own mind and knowledge of everything, the inability to answer a question is answered by, “science will find a way one day.” The inability to answer doesn’t disprove “evolutionism” or “no-Godism.” However, the inability to answer does mean that the Atheist ought to be a bit less dogmatic and open-minded to God. The Atheist who isn’t ready to come to Christ already knows that God exists and has made great effort to create a worldview the filters out God’s Voice because of the love for darkness rather than light.
For the person following Christ, it’s another matter. A person following Christ can say, “I don’t know.” The person following Christ hasn’t rationalized a reason to believe that the Bible is the Word of God. The Holy Spirit has revealed that the books of the Bible were selected by God the Holy Spirit moving through God’s people long ago. The Holy Spirit has been speaking to the Christ-follower through those Scriptures, and the Christ-follower isn’t reading dead letter. The Christ-follower is having an intimate, moment-by-moment experience with Christ.
I’ll add that the Christ-follower’s experience with Christ can’t be used to arm-wrestle the Atheist into submission, of course. However, apologetics is actually the flow of Jesus Christ through the follower of Christ to the unbeliever—or to the believer. When the follower of Christ is living and speaking, the testimony of Jesus Christ is the Spirit of prophecy. The unbeliever can receive this Spirit or not. If the Holy Spirit is rejected, Jesus Christ and the Father are being rejected. This is not a rejection of the Christ-follower.
Yet, all of this can be tested by the unbeliever if the unbeliever doesn’t refuse to look at the evidence. Whoever seeks Christ finds Christ. The believer can instruct the unbeliever in how to come to Christ. If the person is truly open-minded, that person will easily find Christ, and then they will know.

