KJV:
As thou knowest not what is the way of the spirit, nor how the bones do grow in the womb of her that is with child: even so thou knowest not the works of God who maketh all.
NASB:
Just as you do not know the path of the wind and how bones are formed in the womb of the pregnant woman, so you do not know the activity of God who makes all things.
KJV:
But if a man live many years, and rejoice in them all; yet let him remember the days of darkness; for they shall be many. All that cometh is vanity.
NASB:
Indeed, if a man should live many years, let him rejoice in them all, and let him remember the days of darkness, for they will be many. Everything that is to come will be futility.
KJV:
Rejoice, O young man, in thy youth; and let thy heart cheer thee in the days of thy youth, and walk in the ways of thine heart, and in the sight of thine eyes: but know thou, that for all these things God will bring thee into judgment.
NASB:
Rejoice, young man, during your childhood, and let your heart be pleasant during the days of young manhood. And follow the impulses of your heart and the desires of your eyes. Yet know that God will bring you to judgment for all these things.
KJV:
And the doors shall be shut in the streets, when the sound of the grinding is low, and he shall rise up at the voice of the bird, and all the daughters of musick shall be brought low;
NASB:
and the doors on the street are shut as the sound of the grinding mill is low, and one will arise at the sound of the bird, and all the daughters of song will sing softly.
KJV:
Vanity of vanities, saith the preacher; all is vanity.
NASB:
"Vanity of vanities," says the Preacher, "all is vanity!"