'Days' in the Bible

I also {explored} {the effects of indulging my flesh} with wine. My mind guiding me with wisdom, {I investigated} folly so that I might discover what [is] good under heaven for {humans} to do {during the days of their lives}.

Certainly no one will remember the wise man or the fool in {future generations}. When [future] days come, both will have been forgotten already. How [is it that] the wise man dies the same as the fool?

All his days [are] painful, his labor [brings] grief, and his heart cannot rest at night. This also [is] vanity!

Also, he eats in darkness all his days; he is frustrated [in] much sickness and resentment.

Look! I have discovered what is good and fitting: to eat and to drink and {to enjoy} all [the fruit of] the toil with which one toils under the sun during the number of the days of his life that God gives to him--for this [is] his lot.

For he does not remember the [brief] days of his life, for God keeps his heart preoccupied with enjoyment [of life].

Even if a man fathers a hundred [children] and lives many years so that the days of his years are many, if his heart is not satisfied with {his prosperity} and {he does not receive a proper burial}, I deem the stillborn better than him.

For who knows what [is] good for a man in his life during the few days of his fleeting life, which are fleeting as a shadow? For who can tell anyone what will happen {in the future} under the sun?

Do not say, "Why were the former days better than these?" For [it is] not from wisdom [that] you ask this.

But it will not go well with the wicked, and they will not prolong [their] days, like the shadow; because there is no fearing {God's presence}.

So I recommend enjoyment. For there [is] nothing better for man under the sun than to eat and to drink and to rejoice. This will accompany him in his toil the days of his life that God gives to him under the sun.

Enjoy life with the wife whom you love all the days of your vain life which he gives you under the sun, because this [is] your lot in life and in the toil with which you toil under the sun.

Send out your bread on the water, for in many days you will find it.

For if a man lives many years, let him rejoice in all of them! Let him remember that the days of the darkness will be many-- all that is coming [is] vanity!

Rejoice, O young man, in your youth, and let your heart cheer you in the days of your youth! Follow the ways of your heart and the sight of your eyes-- but know that God will bring you into judgment for all these things.

Remember your Creator in the days of your youth-- before the days of trouble come and the years draw near when you will say, "I find no pleasure in them!"