KJV:
That which hath been is named already, and it is known that it is man: neither may he contend with him that is mightier than he.
NASB:
Whatever exists has already been named, and it is known what man is; for he cannot dispute with him who is stronger than he is.
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:
For oftentimes also thine own heart knoweth that thou thyself likewise hast cursed others.
NASB:
For you also have realized that you likewise have many times cursed others.
KJV:
I applied mine heart to know, and to search, and to seek out wisdom, and the reason of things, and to know the wickedness of folly, even of foolishness and madness:
NASB:
I directed my mind to know, to investigate and to seek wisdom and an explanation, and to know the evil of folly and the foolishness of madness.
KJV:
Who is as the wise man? and who knoweth the interpretation of a thing? a man's wisdom maketh his face to shine, and the boldness of his face shall be changed.
NASB:
Who is like the wise man and who knows the interpretation of a matter? A man's wisdom illumines him and causes his stern face to beam.
KJV:
Whoso keepeth the commandment shall feel no evil thing: and a wise man's heart discerneth both time and judgment.
NASB:
He who keeps a royal command experiences no trouble, for a wise heart knows the proper time and procedure.
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?
KJV:
Though a sinner do evil an hundred times, and his days be prolonged, yet surely I know that it shall be well with them that fear God, which fear before him:
NASB:
Although a sinner does evil a hundred times and may lengthen his life, still I know that it will be well for those who fear God, who fear Him openly.