'During' in the Bible

I explored with my mind how to let my body enjoy life with wine and how to grasp folly—my mind still guiding me with wisdom—until I could see what is good for people to do under heaven during the few days of their lives.

I have known that there is no good for them except to rejoice and to do good during their life,

Here is what I have seen to be good: it is appropriate to eat, drink, and experience good in all the labor one does under the sun during the few days of his life God has given him, because that is his reward.

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?

I have seen it all during my pointless life: both a righteous person who dies while he is righteous, and a wicked person who lives to an old age, while remaining wicked.

Just as no human being has control over the wind to restrain it, so also no human being has control over the day of his death. Just as no one is discharged during war, so wickedness will not release those who practice it.

So I commended enjoyment because there is nothing better for man under the sun than to eat, drink, and enjoy himself, for this will accompany him in his labor during the days of his life that God gives him under the sun.

This is an evil among all that hath been done under the sun, that one event is to all, and also the heart of the sons of man is full of evil, and madness is in their heart during their life, and after it -- unto the dead.

Enjoy life with your beloved wife during all the days of your fleeting life that God has given you on earth during all your fleeting days; for that is your reward in life and in your burdensome work on earth.

So enjoy yourself in your youth, young man, and be encouraged during your younger days. Live as you like, consistent with your world view, but keep in mind that God will bring you to account for everything.

So remember your Creator during your youth! Otherwise, troublesome days will come and years will creep up on you when you'll say, "I find no pleasure in them,"