'Days of Your Youth' in the Bible

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 [thoughtfully] also your Creator in the days of your youth [for you are not your own, but His], before the evil days come or the years draw near when you will say [of physical pleasures], “I have no enjoyment and delight in them”;

And in all your repulsive acts and prostitutions (idolatrous immoralities) you did not [pause to] remember the days of your youth, when you were naked and bare, squirming in your [newborn] blood.

Because you have not remembered the days of your youth but have enraged Me with all these things, therefore, I in turn will bring your conduct down on your own head,” says the Lord God, “so that you will not commit this lewdness on top of all your other repulsive acts.

“Nevertheless, I will remember [with compassion] My covenant with you in the days of your youth, and I will establish an everlasting covenant with you.