The words of the Preacher, the son of David, king in Jerusalem.
“Vanity of vanities,’ saith the Preacher, ‘vanity of vanities; all is vanity.
What profit hath a man of all his labour which he taketh under the sun?  One generation passeth away, and another generation cometh: but the earth abideth for ever.
The sun also ariseth, and the sun goeth down, and hasteth to his place where he arose.  The wind goeth toward the south, and turneth about unto the north; it whirleth about continually, and the wind returneth again according to his circuits.
All the rivers run into the sea; yet the sea is not full; unto the place from whence the rivers come, thither they return again…”
Ecclesiastes 1:1-7

Let us hear the conclusion of the whole matter: Fear God, and keep His commandments: for this is the whole duty of man.  For God shall bring every work into judgment, with every secret thing, whether it be good, or whether it be evil.
Ecclesiastes 12:13-14