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.
(Verweise: Apocalypse Explained 6; Apocalypse Revealed 851; Revelation 20:5-6)
Waters, rivers, and depths
'Waters,' 'rivers,' and 'depths,' as in Psalm 78:15-16, signify truths from the Lord.
(Verweise: Arcana Coelestia 2702 [1-17])