As well, if this position is true, whose fault is it if the “unregenerate” man never accesses the “things of God”?
Answer: God, you make God morally culpable.
What scripture is actually teaching, outside of the contamination of the Calvinism, not the contrast between the natural man and the regenerate man but rather that from the natural perspective and the spiritual perspective.
People were putting natural wisdom of Greek philosophy over what needs to be understood from a spiritual perspective.
Go read 1 Cor 2 and step outside of bias you bring to the text and read from the perspective of Paul and his audience.
“These are written that you may believe that Jesus is the Messiah, the Son of God, and that by believing you may have life in his name.” (John 20:31)
The power of conversion is in the hear and reading of the written word.
The word of God is sufficiently powerful, faith comes by hearing. Scripture is clear.
Scripture is clear. However, you misunderstand.
If we accept first what Paul affirmed, the natural mind of man cannot understand the things of God because they are foolishness to him.
That is because the things of God cannot be understood by the natural mind. The worldly consciousness.
We're also told this condition only changes through intercession by Holy Spirit.
Now recall what Jesus told us. No one comes to him unless the father calls them.
When intercession by Holy Spirit is the only way our natural mind can understand that which otherwise is thought to be foolishness, that's God's word, then what Jesus said first about leading of the Holy Spirit is the only way we come to the father then makes sense.
In the beginning was the word and the word was with God and the word was God.
= Faith comes by hearing the word of God.
Think of those strong atheists who mock our faith. Memes of all sort on the net.
The whole world lay in the power of the evil one.
Now think of all those strong atheists that have come to the knowledge of the truth.