Revelation 20:6

Blessed--(Compare Rev 14:13; Rev 19:9). on such the second death hath no power--even as it has none on Christ now that He is risen. priests of God--Apostate Christendom being destroyed, and the believing Church translated at Christ's coming, there will remain Israel and the heathen world, constituting the majority of men then alive, which, from not having come into close contact with the Gospel, have not incurred the guilt of rejecting it. These will be the subjects of a general conversion (Rev 11:15). "The veil" shall be taken off Israel first, then from off "all people." The glorious events attending Christ's appearing, the destruction of Antichrist, the transfiguration of the Church, and the binding of Satan, will prepare the nations for embracing the Gospel. As individual regeneration goes on now, so there shall be a "regeneration" of nations then. Israel, as a nation, shall be "born at once--in one day." As the Church began at Christ's ascension, so the kingdom shall begin at His second advent. This is the humiliation of the modern civilized nations, that nations which they despise most, Jews and uncivilized barbarians, the negro descendants of Ham who from the curse of Noah have been so backward, Cush and Sheba, shall supplant and surpass them as centers of the world's history (compare Deu 32:21; Rom 10:19; Rom 11:20, &c.). The Jews are our teachers even in New Testament times. Since their rejection revelation has been silent. The whole Bible, even the New Testament, is written by Jews.

— Jamieson-Fausset-Brown Commentary (public domain)