'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)

47. Their lot in the other life is this. At first they take several wives as well as concubines there as they did in the world, but because in the spiritual world there is conjunction of minds, and those who disagree in mind cannot remain together, but they separate of their own accord, and eventually they mate with a woman of similar mind, thus by degrees they separate from their wives, and finally are united with one, with whom their mind agrees. Moreover, those who persist in polygamy in course of time become so weak and impotent that they become disgusted with marriage, for this is the effect of lasciviousness.