What does it mean that God is sovereign over the world He created?
God's sovereignty over the world He created means the earth is entirely His; He created it and can do with it whatever He wants. His authority remains undiminished even when humans shake their fists in His face, and in that sovereignty He values and uses whom He chooses.
Les explains that God's sovereignty means He created the world and can do with it whatever He wants, and no one can diminish that sovereignty by shaking a fist in His face. Because all the earth is His, He could set Israel apart as a treasure above all people and use that nation to reach the pagans. In Exodus 19 He promised that if they were obedient they would be a kingdom of priests; since a priest is a go-between, every Jew was to be prepared to stand between the pagan world and Israel's God.