“Let us hear the conclusion of the matter: Fear God and keep his commandments: for this is the whole duty of man. For God shall bring very work into judgment, with every secret thing, whether it be good, or whether it be evil.” (Ecclesiastes 12:13-14 KJV)
You can’t be blamed if the impression you get from reading Ecclesiastes is that “Everything is vanity” must be its theme. But when you reach chapter 12, there seems to be a great reversal of this theme. Instead of “Nothing matters,” this time everything matters because God will judge everything you do. The fact that God is there and will judge everything we’ve done makes everything we do significant. Our lives and actions are meaningful because there is a God who will evaluate all these and will stamp his seal of approval (or disapproval) upon all that we’ve done. If so, we have to make sure we’re ready to face him on judgment day.