2Thessalonians 2 is referring to Satan, whose presence in the throne room of God is what restrains Daniel’s 70th week events.
Soon he will be cast down to Earth, where he will attempt to tribulate the saints. Those that have been observant of the appointed times will slip away to the place in the desert, where they will be protected until the last trump.
Those that have been caught unawares will face the choice of taking the mark, or death.
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2 Thess 2:7 For the mystery of lawlessness already works. Only there is one who restrains now, until he is taken out of the way. Then the lawless one will be revealed
Soon he will be cast down to Earth, where he will attempt to tribulate the saints.
According to scripture it is the very next thing which happened.