Ecclesiastes 9:5-6, 10

For the living know they will die; but the dead do not know anything, nor have they any longer a reward, for their memory is forgotten. Indeed their love, their hate and their zeal have already perished, and they will no longer have a share in all that is done 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 where you are going.