'Sovereignty' in the Bible

The seventh angel blew his trumpet; and there followed loud voices in Heaven which said, "The sovereignty of the world now belongs to our Lord and His Christ; and He will be King until the Ages of the Ages."

Then I heard a loud voice speaking in Heaven. It said, "The salvation and the power and the Kingdom of our God have now come, and the sovereignty of His Christ; for the accuser of our brethren has been hurled down--he who, day after day and night after night, was wont to accuse them in the presence of God.