'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)

6608. The light of understanding has been given to me, taken away, lessened, and moderated when I have been thinking, speaking, and writing. This has happened frequently, and I have been allowed to perceive the variations and differences. The actual light I perceived as illumination that shone on the substances of my inward sight just as the sun gives light to the physical organs of sight. This general illumination made matters of thought visible just as earthly objects become visible when the eye is supplied with light. I was told that those variations in the light of understanding arose from different kinds of contact with heavenly communities.