Fear God and Keep His Commandments

On Ecclesiastes- "Solomon's conclusion to 'fear God and keep His commandments' is more than the book's summary; it is the only hope of the good life and the only reasonable response of faith and obedience to sovereign God. He precisely works out all activities under the sun, each in its time according to His perfect plan, but also discloses only as much as his perfect wisdom dictates and holds all men accountable. Those who refuse to take God and His word seriously are doomed to lives of the severest vanity."
~The MacArthur Study Bible