'Grave' in the Bible

God gives a man riches, property, and wealth so that he lacks nothing that his heart desires, yet God does not enable him to enjoy the fruit of his labor -- instead, someone else enjoys it! This is fruitless and a grave misfortune.

Whatever you find to do with your hands, do it with all your might, because there is neither work nor planning nor knowledge nor wisdom in the grave, the place where you will eventually go.