Beast and the False Prophet captured at Armageddon
Revelation 19:19-20
King James Version
19 And I saw the beast, and the kings of the earth, and their armies, gathered together to make war against him that sat on the horse, and against his army.
20 And the beast was taken, and with him the false prophet that wrought miracles before him, with which he deceived them that had received the mark of the beast, and them that worshipped his image. These both were cast alive into a lake of fire burning with brimstone.
After the Lord Jesus Christ has his 1,000 year reign on Earth, Satan will be put in the Lake of Fire.
The Beast (the Antichrist) and the False Prophet have been there 1,000 years.
THEN The Great White Throne Judgment occurs.
John 3:17-18
Revelation 20:10
King James Version
10 And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and shall be tormented day and night for ever and ever.
As an aside, isn’t Satan going to be cast into the Lake of Fire also? I realize he isn’t physical (at least not in this dimension).