1 Corinthians 2:14-16

2:14 The unbeliever does not receive the things of the Spirit of God, for they are foolishness to him. And he cannot understand them, because they are spiritually discerned. 2:15 The one who is spiritual discerns all things, yet he himself is understood by no one. 2:16 For who has known the mind of the Lord, so as to advise him? But we have the mind of Christ.