Moreover the profit of the earth is for all: the king himself is served from the field.
All Commentaries on Ecclesiastes 5:9 Go To Ecclesiastes 5
Didymus the Blind
AD 398
Regarding the literal interpretation: No one is lord, owner and ruler over a field that lies fallow where thorns and thistles grow; but the field that is well tilled has a king. Thereby the owner is called a king.… When the defenders of the teaching that God’s providence rules over everything argue that there is providence, they generally say, Like a weave clearly shows that there is a weaver—whether or not he is seen—in the same way he who sees a well tilled field gets the impression that it has someone who leads and rules over it.… When you, therefore, see a soul that is well tilled, that sows with tears and is ready to reap with shouts of joy, then this tilled field has a king, the Logos, who leads, rules and reigns.