KJV:
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.
NASB:
For who among men knows the thoughts of a man except the spirit of the man which is in him? Even so the thoughts of God no one knows except the Spirit of God.
KJV:
But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.
NASB:
But a natural man does not accept the things of the Spirit of God, for they are foolishness to him; and he cannot understand them, because they are spiritually appraised.
KJV:
For who hath known the mind of the Lord, that he may instruct him? But we have the mind of Christ.
NASB:
For WHO HAS KNOWN THE MIND OF THE LORD, THAT HE WILL INSTRUCT HIM? But we have the mind of Christ.
KJV:
And again, The Lord knoweth the thoughts of the wise, that they are vain.
NASB:
and again, "THE LORD KNOWS THE REASONINGS of the wise, THAT THEY ARE USELESS."
KJV:
But I will come to you shortly, if the Lord will, and will know, not the speech of them which are puffed up, but the power.
NASB:
But I will come to you soon, if the Lord wills, and I shall find out, not the words of those who are arrogant but their power.
KJV:
And if any man think that he knoweth any thing, he knoweth nothing yet as he ought to know.
NASB:
If anyone supposes that he knows anything, he has not yet known as he ought to know;