'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.

(Referencat: Apocalypse Explained 6; Apocalypse Revealed 851; Revelation 20:5-6)

1018. The reason why the statement found in verse 1 of this chapter 'be fruitful and multiply' is repeated here is that the conclusion is reached at this point. This statement means that everything will go well and will bear fruit and multiply if people refrain from what is meant by 'eating blood' and by 'shedding blood', that is to say, if they do not destroy charity by acts of hatred and profanation.