You need to send God a memo,
because he was the one that told Adam that we are dust. He did not say "you are spirit, and your dust shall return to the earth." Better hurry and send him a correction that he can publish.
I guess God told Paul a bit more. Haven't you heard? Man is not only body, but body, soul, and spirit. 1 Thessalonians 5:23
Man's body was formed from the dust of the ground. The Scripture speaks of man with more than just a body of flesh. It speaks of a spirit formed within him.
Zechariah 12:1 The burden of the word of the Lord for Israel, saith the Lord, which stretcheth forth the heavens, and layeth the foundation of the earth, and formeth the spirit of man within him.
Ecc. 12:7 Then shall the dust return to the earth as it was: and the spirit shall return unto God who gave it.
Oh, and by the way, Ecclesiastes is inspired scripture, and also speaks of the coming Judgment. "Just man's words" eh?
I said, "God's record of man's arguments"....perhaps I need to send YOU a memo.
The clue is "under the sun". From what man can see and understand.
Ecclesiastes 1:14 I have seen all the works that are done under the sun; and, behold, all is vanity and vexation of spirit.
Ecclesiastes 2:11Then I looked on all the works that my hands had wrought, and on the labour that I had laboured to do: and, behold, all was vanity and vexation of spirit, and there was no profit under the sun.
Ecclesiastes 2:17 Therefore I hated life; because the work that is wrought under the sun is grievous unto me: for all is vanity and vexation of spirit.
Pretty hopeless, don't you think?
Ecclesiastes 4:1-3 So I returned, and considered all the oppressions that are done under the sun: and behold the tears of such as were oppressed, and they had no comforter; and on the side of their oppressors there was power; but they had no comforter. 2 Wherefore I praised the dead which are already dead more than the living which are yet alive. 3 Yea, better is he than both they, which hath not yet been, who hath not seen the evil work that is done under the sun.