BoogerMan, this is where he got it from. It is indeed found in the Greek MSS. Jesus told his disciples they will sit on thrones. Note Peter talks of a "royal priesthood." You can check it in your translation(s) of the Bible.
28 Jesus said to them, Truly I say to YOU, In the re-creation, when the Son of man sits down upon his glorious throne, YOU who have followed me will also yourselves sit upon twelve thrones, judging the twelve tribes of Israel. (Matt. 19:28)
9 But YOU are a chosen race, a royal priesthood, a holy nation, a people for special possession, that YOU should declare abroad the excellencies of the one that called YOU out of darkness into his wonderful light. (1 Pet. 2:9)
21 To the one that conquers I will grant to sit down with me on my throne, even as I conquered and sat down with my Father on his throne. (Rev. 3:21)
9 And they sing a new song, saying, You are worthy to take the scroll and open its seals, because you were slaughtered and with your blood you bought persons for God out of every tribe and tongue and people and nation, 10 and you made them to be a kingdom and priests to our God, and they are to rule as kings over the earth. (Rev. 5:9-10)
6 Happy and holy is anyone having part in the first resurrection; over these the second death has no authority, but they will be priests of God and of the Christ, and will rule as kings with him for the thousand years. (Rev. 20:6 NW) [Cursive script added.]