KJV:
For who knoweth what is good for man in this life, all the days of his vain life which he spendeth as a shadow? for who can tell a man what shall be after him under the sun?
NASB:
For who knows what is good for a man during his lifetime, during the few years of his futile life? He will spend them like a shadow. For who can tell a man what will be after him under the sun?
KJV:
Say not thou, What is the cause that the former days were better than these? for thou dost not inquire wisely concerning this.
NASB:
Do not say, "Why is it that the former days were better than these?" For it is not from wisdom that you ask about this.
KJV:
Be not righteous over much; neither make thyself over wise: why shouldest thou destroy thyself?
NASB:
Do not be excessively righteous and do not be overly wise. Why should you ruin yourself?
KJV:
Be not over much wicked, neither be thou foolish: why shouldest thou die before thy time?
NASB:
Do not be excessively wicked and do not be a fool. Why should you die before your time?
KJV:
That which is far off, and exceeding deep, who can find it out?
NASB:
What has been is remote and exceedingly mysterious. Who can discover it?
KJV:
Where the word of a king is, there is power: and who may say unto him, What doest thou?
NASB:
Since the word of the king is authoritative, who will say to him, "What are you doing?"
KJV:
For he knoweth not that which shall be: for who can tell him when it shall be?
NASB:
If no one knows what will happen, who can tell him when it will happen?