'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)

6231. 'And he said to me, Behold, I am making you fruitful and will cause you to be multiplied' means a bestowal of life through the good of charity and the truth of faith. This is clear from the meaning of 'being made fruitful' as that which has regard to the good of charity, and of 'being multiplied' as that which has regard to the truth of faith, dealt with in 43, 55, 913, 983, 2846, 2847. Since these are what bestow life on a person, the expression 'a bestowal of life through them' is used.