Ecclesiastes 9:7-12

Go your way, eat your bread with joy and drink your wine with a cheerful heart [if you are righteous, wise, and in the hands of God]; for God has already approved and accepted your works. Let your clothes always be white [with purity], and do not let the oil [of gladness] be lacking on your head. Live joyfully with the wife whom you love all the days of your fleeting life which He has given you under the sun—all the days of vanity and futility. For this is your reward in life and in your work in which you have labored under the sun. Whatever your hand finds to do, do it with all your might; for there is no activity or planning or knowledge or wisdom in Sheol (the nether world, the place of the dead) where you are going. I again saw under the sun that the race is not to the swift and the battle is not to the strong, and neither is bread to the wise nor riches to those of intelligence and understanding nor favor to men of ability; but time and chance overtake them all. [Ps 33:16-19; Rom 9:16] For man also does not know his time [of death]; like fish caught in a treacherous net, and birds caught in the snare, so the sons of men are ensnared in an evil time when a dark cloud suddenly falls on them.