'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)

2727. HOW MARRIAGES ARE REGARDED IN HEAVEN AND ALSO ADULTEROUS SITUATIONS

What genuine conjugial love is and where it originates few know at the present day, the reason being that it exists with few. Almost everyone believes that it is inborn and so flows from, they say, a kind of natural instinct, such belief being strengthened by the fact that the inclination to pair off as in marriage also occurs among animals. But the difference between conjugial love with human beings and that inclination with animals is as the difference between the human condition and that of any animal.