Commentaries:
Apparently, these are all metaphors or figures for the value of life—gold and silver. Life is good, Solomon says. Again, he is encouraging us to take advantage of what we have been given before it is too late, because everything will return to the dust, and the spirit will return to the God who gave it (verse 7).
John W. Ritenbaugh
Ecclesiastes and the Feast of Tabernacles (Part 2)