A natural man does not accept the things of the spirit of God, but God reveals His secrets to those who have His Spirit.

"But the one who is spiritual discerns all things, yet he himself is discerned by no one. But the one who is spiritual discerns all things, yet he himself is discerned by no one. For who has known the mind of the Lord, that he will instruct Him? But we have the mind of Christ." - 1 Corinthians 2:14-15