tepidpoultry,
I forgot to add the following to my earlier comments:
Yet somehow they noticed the same concept even in the canonical book (Ecclesiastes 3: 12–13 and 9, 9): “I have concluded that there is nothing better for people than to be happy and to enjoy themselves as long as they live, and also that everyone should eat and drink, and find enjoyment in all his toil… Enjoy life with your beloved wife during all the days of your fleeting life…”
Hence they added a verse that would contradict it in the end of the book: “Now all has been heard; here is the conclusion of the matter: Fear God and keep his commandments, for this is the duty of all mankind. For God will bring every deed into judgment.” (Ecclesiastes 12:13, 14)