That which hath been is named already, and it is known that it is man: neither may he contend with him that is mightier than he. Ecclesiastes 6:10 (KJV)
Qoheleth seems to question human exceptionality. He questions the profit of a man’s labour, the ingenuity of claiming his name for eternity. There is nothing new he could do, there is nothing new he can think, and therefore, nothing can give him rest. Provan lays this out appropriately, “… (this) reminds us of our true nature as human beings. Everything that exists has already been ‘named’ in accordance with its true character (Gen. 2:19–20). This includes ‘man’ (Adam), who comes from the ‘dust’ (Gen. 2:7) and will return to the dust (Eccl. 12:7). Human beings prefer to make a name for themselves (Gen. 11:4); but in fact, they already possess one, and it is a name that signifies weakness (dust) in the face of the almighty Creator God, with whom no one can ‘contend’ or dispute, as Job discovered (Job 38–42).” (149)
Reference:
Provan, I. (2001). Ecclesiastes/Song of Songs: The New Application Commentary, Zondervan