The King, which is God, expects that his servants, the Jewish people, will take the wheat and flax that has been given to them and cultivate it into bread and cloth; He expects them to create the Oral Torah from the Written Torah given to Moshe. While the wheat itself is useful, just as the Written Torah is, there still remains greater significance and application within; the Written Torah has the potential to become a more developed, more useful halakha that can be internalized by the Jewish people.