“For what man knoweth the things of a man, save the spirit of man which is in him? even so the things of God knoweth no man, but the Spirit of God.”
King James Version (KJV)
2:11 For what man knoweth the things of a man - All the inmost recesses of his mind; although men are all of one nature, and so may the more easily know one another. So the things of God knoweth no one but the Spirit - Who, consequently, is God.
1Co 2:11 For what man knoweth, etc. A man's spirit knows all his secrets, though these are unknown to another man. So God's Spirit knows the Divine secrets, and imparts these wherever he dwells in full measure as the Spirit of Knowledge.