You are saying that the natural man, as described in 1 Cor 2:14, has the ability to discern spiritual things, which is the direct opposite of what that verse says. Is it not? God is a spirit and we must worship him in spirit and in truth. The Eunuch was going to worship a spiritual God, therefore, evidencing that he had already been born of the Spirit. Would it be possible for a natural man to desire, long for and understand spiritual things? NO, unless you tear 1 Cor out of the bible. You are saying that after the natural man is regenerated, he can not have a restored relationship, but in fact his relationship is not restored, because he never had a relationship before he was regenerated. When you are born again, you are a new creature. If you would read Eph 2 especially verse 5, you would see that the natural man had nothing to do with his regeneration, therefore, it is by God's grace, without the help of man.. It is not of him that willeth, nor of him who runneth, but of God that showeth mercy.