Revelation 12:7-8

And war broke out in heaven:  Michael and his angels fought with the dragon; and the dragon and his angels fought, but they did not prevail, nor was a place found for them in heaven any longer.

·         The attempts of the dragon not only proved unsuccessful against the church, but fatal to his own interests (MH)

·         At the mid-point of the great tribulation, God will turn the tide against Satan - first in heaven, then on earth. A battle will take place that will deny Satan access to heaven.  (DG)