Ecclesiastes 9:5-6, 10

The living at least know they will die, but the dead know nothing. They have no further reward, nor are they remembered. Whatever they did in their lifetime—loving, hating, envying—is all long gone. They no longer play a part in anything here on earth.

Whatever you do, do well. For when you go to the grave, there will be no work or planning or knowledge or wisdom.