Ecclesiastes 9:9-10

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.