Revelation 20
So what is the mark that those who live with Yahshua the Messiah for 1000 years did not receive?
Umm... the mark spoken of earlier in Revelation.
4 And I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image,
neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years.
Rev 13
16 It also forced all people, great and small, rich and poor, free and slave, to receive a mark on their right hands or on their foreheads, 17 so that they could not buy or sell unless they had the mark, which is the name of the beast or the number of its name.
18 This calls for wisdom. Let the person who has insight calculate the number of the beast, for it is the number of a man.[e] That number is 666.
What was it exactly? Hard to be sure.
I know some will try to say that since no one knows for sure what it was, we can't say that it happened.
I think such assertions are bunk.
We know it happened, cuz Jesus said it would happen near and soon to them.
The revelation from Jesus Christ, which God gave him to show his servants what must
soon take place. He made it known by sending his angel to his servant John, 2 who testifies to everything he saw—that is, the word of God and the testimony of Jesus Christ. 3 Blessed is the one who reads aloud the words of this prophecy, and blessed are those who hear it and take to heart what is written in it,
because the time is near.