He said elsewhere that the natural man cannot receive the things of God.
So far, looks like Paul agrees with me.
But what did Paul mean by the term "natural man"?
I ask that, because Paul believed unregenerate men could believe.
Gal 3:2 This only would I learn of you,
Received ye the Spirit by the works of the law, or by the hearing of faith?
Romans 8:9 tells us that a man without the "indwelling" Holy Spirit is in the flesh, yet Paul's question in Galatians 3:2 demands the answer that these Galatians believed the gospel before they received the Holy Spirit.
Therefore Paul believed an unregenerate man had the ability to believe. And Paul did not say this once, he said it several times in scripture;
Acts 19:2 He said unto them,
Have ye received the Holy Ghost since ye believed? And they said unto him, We have not so much as heard whether there be any Holy Ghost.
Here again, Paul asked these persons if they had received the Holy Spirit SINCE they believed. So it is obvious Paul believed unregenerate men had the ability to believe the gospel, and if they did so they would receive the Holy Spirit.
This completely refutes your interpretation of 1 Cor 2:14.
Peter also believed unregenerate men had the ability to believe the gospel, and that if they did so, they would also receive the Spirit.
Acts 2:38 Then Peter said unto them,
Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.
Peter told these Jews if they repent and believe on Jesus (because only believers are baptized) they would receive the Holy Spirit.
So if your interpretation of 1 Cor 2:14 is correct, then both Peter and Paul were very confused persons who did not know proper doctrine, because both of these men believed unregenerate men not only had the ability to understand the gospel, but they also believed unregenerate men could believe the gospel, and that AFTER they believed they would receive the Holy Spirit.
And no man is regenerated until he receives the Spirit (Rom 8:9).
John also believed unregenerate men could believe.
Jhn 7:38 He that believeth on me, as the scripture hath said, out of his belly shall flow rivers of living water.
39 (But this spake he of the Spirit, which they that believe on him should receive: for the Holy Ghost was not yet given; because that Jesus was not yet glorified.)
John showed that many thousands of persons believed on Jesus before the Holy Spirit was given. So again, the apostles believed unregenerate men had the ability to understand and believe the gospel.