Rev 20:7

7 And after the thousand years, Satan will be freed out of his prison, 

after 1,000 years – after the Kingdom of heaven has been cleansed, and Christ’s prayer for the saints to be united by the truth has been fulfilled! This may be the greatest moment of the Church, and mankind for as Jesus prayed “the world may believe that You sent Me” (John 17:21). This is also a time of peace, when “the mountain of the house of the LORD is established” (Isa 2:2) and the nations will “hammer their swords into plowshares” (Isa 2:4).

However, as Paul said, “while they are saying: ‘Peace and safety’ then destruction will come upon them suddenly” (1 Thess 5:3). And for those who remain outside the sanctified Church, it will be a very difficult time, as was saw in the 5th bowl of wrath.

released from his prison – the abyss.