1 Corinthians 2:14 - 2:16
14 But a natural man does not accept the depths of the Spirit of God, for they are foolishness to him, and he cannot understand them, because they are spiritually examined. 15 But he who is spiritual examines all things, yet he himself is examined by no one. 16 For who has known the mind of the Lord, that he will direct Him? But we have the mind of Christ.