God: "I looked for someone to take a stand for me, and stand in the gap" (Ezekiel 22:30)
When God gives a promise, He always tries our faith. Just as the roots of trees take firmer hold when they are contending with the wind, so faith takes a firmer hold when it struggles with adverse appearances.
If God rules only in those places or events where no sin is involved, God does not rule on this earth. If sin can thwart God, His sovereignty is a name and not a fact.