10 I heard a loud voice in heaven, saying, “Now is come the salvation, the power, and the kingdom of our God, and the authority of his Christ; for the accuser of our brothers has been thrown down, who accuses them before our God day and night.
the authority of His Christ has come – after Christ endured the cross, He was made Lord “of those who are in heaven and on the earth” (Phil 2:10). In the Old Testament, the Angel of YHVH was “one of the Chief Captains” (Dan 10:13). Now He is the ruler of all Angels, “the Captain of the Captains” (Dan 8:25), and now the Angel of YHVH uses His authority to cast Satan and his angels out of heaven.