The twenty-first Book in the Bible is Ecclesiastes. The word Ecclesiastes means "a speaker at an assembly". There is only one speaker in the book - The Teacher. Ecclesiastes is the sharing of one man's search for satisfaction in life, in which we discover that without God there is no meaning to be found. The Teacher wants to spare his readers the harsh lessons which he has himself learned.
Ecclesiastes 12:13-14
"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"