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.

²⁷ The Lord keeps watch over the spirit of man, searching all the deepest parts of the body.

⁹ The heart is a twisted thing, not to be searched out by man: who is able to have knowledge of it?

¹⁰ No one has knowledge of a man's grief but himself; and a strange person has no part in his joy.

³³ O how deep is the wealth of the wisdom and knowledge of God! no one is able to make discovery of his decisions, and his ways may not be searched out.

³⁴ Who has knowledge of the mind of the Lord? or who has taken part in his purposes?

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.

⁵ The purpose in the heart of a man is like deep water, but a man of good sense will get it out.