1st Corinthians 2:14

10 But God has given us the revelation of these things through his Spirit, for the Spirit makes search into all things, even the deep things of God.

11 For who has knowledge of the things of a man but the spirit of the man which is in him? in the same way, no one has knowledge of the things of God but the Spirit of God.

12 But we have not the spirit of the world, but the Spirit which comes from God, so that we may have knowledge of the things which are freely given to us by God.

13 And these are the things which we say, not in the language of man's wisdom, but in words given to us by the Spirit, judging the things of the spirit by the help of the Spirit.

14 For the natural man is not able to take in the things of the Spirit of God: for they seem foolish to him, and he is not able to have knowledge of them, because such knowledge comes only through the Spirit.

15 But he who has the Spirit, though judging all things, is himself judged by no one.

16 For who has knowledge of the mind of the Lord, so as to be his teacher? But we have the mind of Christ.