Satan Cast Out: "The Prince of this World" is Satan, right? If so, then he is cast out, does that mean his power is reduced? [John 12:31, Revelation 12:9-1, Job 1-2, Zechariah 3, Romans 8:34]. Satan Cast Out: When exactly was Satan going to be cast out? Does this just reduce his power and therefore there is more good in the world? [Colossians 2:15, Hebrews 2:14, Luke 10:18, Revelation 20:1-3].