Resurrection, the first
'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)
Cord of formlessness, and the stone of the void
'Cord of formlessness,' and 'the stone of the void,' as in Isaiah 34:11, signify the desolation and vastation of truth.
(References: Arcana Coelestia 5044 [1-13])