'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.

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

542. In the case of those who are brought into heaven so that they may know the nature of it, either their physical impulses and false notions are lulled to sleep - for nobody can enter heaven with physical impulses and false notions which they bring with them from the world - or else they are encircled by spirits who moderate in a miraculous fashion those things that are unclean and cause dissension. With some the interiors of their being are opened. These things and others are what they experience according to the lives they have led and their resulting dispositions.