'Reflected' in the Bible

I reflected on everything that is accomplished by man on earth, and I concluded: Everything he has accomplished is futile -- like chasing the wind!

Yet when I reflected on everything I had accomplished and on all the effort that I had expended to accomplish it, I concluded: "All these achievements and possessions are ultimately profitless -- like chasing the wind! There is nothing gained from them on earth."

So I reflected on all this, attempting to clear it all up. I concluded that the righteous and the wise, as well as their works, are in the hand of God; whether a person will be loved or hated -- no one knows what lies ahead.