Rev 12 & "Your redemption is drawing near" in Lk 21.28

One of the implications of Rev 12 is that increased persecution of the church at this time results from Jesus' victory over Satan in heaven, and casting him down to where the church is, in land and sea.

But that's critical -- the church's persecution at this time, i.e., the great tribultion -- is a sign of Jesus' victory over Satan.

And so Jesus teaches. In teaching about the persecution of the church and the destruction of Jerusalem in Luke 21, Jesus concludes by telling his disciples that "When these things begin to take plce, stand up and lift up your heads, because your redemption is drawing near" (Lk 21.28). The terror that comes on the earth is the sign that the ascended Jesus is enthroned in heaven (seeing Jesus "coming on the clouds" is seeing Jesus as the ascended Lord, Dan 7.13) -- and that Satan the usurper has been cast down to the earth and is furious over the short time he has before being bound.

The tribulation of that time indeed tells the Christian that "your redemption is drawing near," i.e., Jesus reigns and Satan is bound.