Apocalypse Explained #611
611. But in the days of the voice of the seventh angel, when he is about to sound.- That this signifies the last state of the church, and then revelation of Divine Truth, is evident from the signification of the days of the voice of the seventh angel, as denoting the last state of the church; for the progressive changes of the state of the church are described by the sounding of the seven angels, therefore the voice of the seventh angel signifies the last state; and from the signification of, when he is about to sound, as denoting revelation then of Divine Truth. That by sounding a trumpet or horn is signified the influx of Divine Truth, and its revelation, may be seen above (n. 502). That its revelation is here signified, is evident from the following part of this verse, where it is said, "And the mystery of God shall be consummated, as he hath declared in good tidings to his servants the prophets." This signifies that the prediction concerning the coming of the Lord shall then be fulfilled. With the coming of the Lord there is also revelation of Divine Truth.
Arcana Coelestia #410
410. There are two kinds of vastation. The first is the vastation of people who know yet do not wish to know, or who see yet do not wish to see, as was characteristic of the Jews, and is characteristic of Christians at the present time. The second is the vastation of people who neither know nor see anything because they have no knowledge, as was characteristic of gentiles in the past and still is characteristic of them today. When the final point of vastation is reached with those who know and yet do not wish to know, or who see and yet do not wish to see, a Church rises up anew, not however among the same people, but among others whom they call gentiles. This was what happened to the Most Ancient Church which existed before the Flood, what happened to the Ancient Church after the Flood, and also what happened to the Jewish Church. The reason new light at that point starts to shine for the first time is, as has been stated, that it is then no longer possible for people to profane things that are revealed, since they do not acknowledge and believe that these are true.