I have two questions, in Revelation 19:20 it says the beast and the false prophet were thrown alive into the lake of fire. Did they receive resurrected bodies, or were they thrown in to the lake of fire in their earthly bodies? If so what will happen to them? Also, at the end of the millennium what type of bodies will the believers in Christ have and what type of bodies will the non-believers have as they enter eternity?
The fact that the anti-Christ and his false prophet will be thrown alive into the lake of fire indicates they will not die and be resurrected but will go in their natural bodies. They will suffer by themselves for the first 1000 years and then Satan will be thrown in with them, after which the three of them will suffer for eternity (Rev. 20:10)
All who participate in the Eternal kingdom that follows the Millennium will be believers in resurrection bodies. Non-believers will not be allowed in eternity, but will remain in the lake of fire with Satan, the anti-Christ, and the false prophet.