We have used 1 Corinthians 2:14 before in explaining why we should never argue or attempt to debate the Word of God with an unbeliever:
14 But the natural, nonspiritual man does not accept or welcome or admit into his heart the gifts and teachings and revelations of the Spirit of God, for they are folly (meaningless nonsense) to him; and he is incapable of knowing them [of progressively recognizing, understanding, and becoming better acquainted with them] because they are spiritually discerned and estimated and appreciated.
An unbeliever has no capability of understanding the teaching of the Word of God! That is why the disciples of Jesus could walk directly in His presence for three years of His ministry and understand nothing of what He was actually about to do at the cross! BUT, once they were born again and had received the Spirit of God to dwell inside of them, and then were filled with the Spirit on the Day of Pentecost, they did have the ability to understand! That was one of the most pronounced things to happen for me when I was filled with the Spirit. The Word of God came so alive that I actually would know things about Him before I even saw them in the Word! Remember, His Word is TRUTH (John 17:17) and the understanding of it is vital for your continued growth. So what DO we share with unbelievers? Look at verses 4-5:
4 And my language and my message were not set forth in persuasive (enticing and plausible) words of wisdom, but they were in demonstration of the [Holy] Spirit and power, 5 So that your faith might not rest in the wisdom of men (human philosophy), but in the power of God.
We preach the Gospel! When WE preach the simple Gospel, GOD will confirm that Word with signs and wonders and miracles! AMEN! Then when they, and YOU, are grown in the things of God, verses 6-8 apply!
6 Yet when we are among the full-grown (spiritually mature Christians who are ripe in understanding), we do impart a [higher] wisdom (the knowledge of the divine plan previously hidden); but it is indeed not a wisdom of this present age or of this world nor of the leaders and rulers of this age, who are being brought to nothing and are doomed to pass away. 7 But rather what we are setting forth is a wisdom of God once hidden [from the human understanding] and now revealed to us by God--[that wisdom] which God devised and decreed before the ages for our glorification [to lift us into the glory of His presence]. 8 None of the rulers of this age or world perceived and recognized and understood this, for if they had, they would never have crucified the Lord of glory.
I LOVE the Word of God! There is nothing on this earth that makes SO much sense as the Word of God does! Put the Word of God as YOUR priority and feed on it continually through every avenue available to you and you will be amazed at how very powerful it is! You will NEVER be the same, and those around you will notice! Here is Hillsong with a wonderful older song called "Yours Is The Kingdom":
Shalom in Him!