Ecclesiastes 7-12

Have you noticed how "under the sun" is repeated?  This is the extent of Solomon's world as he knows it.
This may mean that Solomon had an idea that there are some things that happen in human experience, and some that happen elsewhere....remember that there was not much understanding of the concept of eternal life in the Old Testament.

Solomon continues with the thought that everything that we have is nothing without God.  Everyone has death in common, regardless of what he gains or loses in life.

The final and compelling conclusion of this book is in 12: 13
here is the conclusion of the matter:
Fear God and keep his commandments,
for this is the whole duty of man.....

Have you read this before?  I guarantee you have!!!!!!

1 Samuel 22:  To obey is better than sacrifice

Genesis 17:9  The God said to Abraham, "As for you, you must keep my covenant, you and your desccendents after you for the generations to come"

Give me more citations from Scripture...it is so easy to find.....