'The first resurrection,' mentioned in Revelation 20:5, 6, does not mean a first resurrection, but the essence and primary part of resurrection, which is salvation and eternal life. There is only one resurrection to life. A second does not happen, and is not mentioned anywhere in the Bible.

(References: Apocalypse Explained 6; Apocalypse Revealed 851; Revelation 20:5-6)

305. Verses 4, 5. And I wept much, that no one was found worthy to open and to read the book, neither to look therein. And one of the elders saith unto me, Weep not: behold, the Lion which is of the tribe of Judah, the Root of David, hath prevailed to open the book, and to loose the seven seals thereof.

"And I wept much, that no one was found worthy to open and to read the book, neither to look therein," signifies, grief of heart on account of the disorder and ruin of all, if no one could know, have cognisance of, and explore all men, and all things pertaining to them.

"And one of the elders" signifies, a society of heaven which [was] in wisdom above the rest; "saith unto me, Weep not," signifies lest there be grief hence; "behold, the Lion hath prevailed," signifies, that the Lord from His own power subjugated the hells, and reduced all things in the heavens to order; "of the tribe of Judah, the Root of David," signifies, by the Divine good united to the Divine truth in His Human; "to open the book, and to loose the seven seals thereof," signifies that He knows and has cognisance of all men and every man, and the most secret things of every one.