“Now have come the salvation and the power and the kingdom of our God, and the authority of his Christ. For the accuser of our brothers, who accuses them before our God day and night, has been hurled down.”
—Revelation 12:10; (compare John 12:31, KJV).

Jesus won a deciding victory over Satan at the cross. At the cross Jesus confirmed the certainty of the plan of salvation. God provided “power” for resisting the cunning of Satan, “the kingdom of God” was made secure, and the Saviour’s “authority” to be our High Priest and King was confirmed.

“Now have come the salvation” declares that history’s crowning event has arrived. The birth of Christ, the Saviour of the world, has taken place (verse 5). In spite of Satan’s fierce temptations, Jesus has lived His sinless life. Jesus has died and emerged from the grave a victor over sin and death (verse 10). Satan has been forever defeated (verses 7-9). The cross is magnified in its full power (verse 10-11).

The announcement, “now has come the salvation,” interests not only John, but the entire universe:

“Therefore rejoice, you heavens and you who dwell in them! But woe to the earth and the sea, because the devil has gone down to you! He is filled with fury, because he knows that his time is short.”
—Revelation 12:12.

All heaven celebrated Jesus’ victory. Christ destroyed any claim Satan may have once had to a place in heaven, and a defeated Satan lost forever his claim to our world. In lock step with Christ the Christian church marched forward in triumph.