'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)

5058. There was another spirit who in the world had been one of the quite distinguished. I had been acquainted with him then, though not with what he was like inwardly. In the next life however, after his state of life underwent a number of changes, he was shown to be deceitful. Having been some while among deceitful ones in the next life and having suffered severely there, he wished to be parted from them. I heard him saying at this time that he wished to enter heaven, for he too had believed that acceptance there was attributable to mercy alone. But he was told that if he entered heaven he would not be able to remain there and that he would suffer torment like those in the world experiencing death-throes. But in spite of being told this he persisted with his desire. He was allowed into a community where some of the simple good dwelt, in front overhead. But once he entered that community he began, in keeping with the life he had led, to act cunningly and deceitfully. Soon after this the simple good there started to complain that he was taking away their perception of what was good and true and consequently their delight, and that he was destroying their state as he did so. At that point some light from a more internal heaven was let in. In that light he looked like a devil, with the upper part of his nose horribly disfigured from some dreadful wound; and he also began to suffer torment within himself. Having experienced that torment he thrust himself away from there into hell. From this it is evident that what leads to heaven is not election and acceptance attributable to mercy, but a person's life. Yet every aspect of a life consisting of goodness and every aspect of a faith composed of truth is, so far as those in the world who are recipients of mercy are concerned, attributable to mercy. To them being accepted into heaven is an act of mercy, and these are the ones who are called the elect, 3755 (end), 3900.