'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)

651. And shall overcome them, and kill them.- That this signifies the destruction thence of all the good and truth of the church, is evident from the signification of overcome and killing the two witnesses, as denoting to destroy those things which the two witnesses signify, which are the good of love and of charity, and the truth of doctrine and of faith. That the affections of the natural man separated from the affections of the spiritual man, which are evil desires of every kind arising from infernal loves, will destroy those things, is signified by the beast coming up out of the abyss; that it was predicted that this will come to pass at the end of the church, when the Last Judgment takes place, has been stated above. To kill, in the Word, signifies to kill spiritually, which is here to destroy the good of love and truth of doctrine, as may be seen above (n. 315).