Apocalypse Revealed #807
807. 19:3 And a second time they said, "Alleluia! Her smoke rises up forever and ever!" This symbolizes a thanksgiving and celebration of the Lord with joy, that the profane Roman Catholic religion has been damned to eternity.
Their speaking a second time originates from a different affection of joy, because they had been freed from the assault of those who were caught up in the Roman Catholic religion, and from the fear of their resurgence and their assailing them again. That alleluia symbolizes a thanksgiving and celebration of the Lord may be seen in no. 803 above. Her smoke symbolizes the Roman Catholic religion in respect to its dreadful falsities, since falsities arising from evil appear in the spiritual world as billows of smoke from a fire (no. 422). Fire there is the love of self (nos. 468 at the end, 494, 766). The smoke produced by burning, in reference to Babylon, symbolizes profanation (nos. 766, 767). Rising up forever and ever symbolizes the damnation of that religion to eternity.
Apocalypse Revealed #327
327. Saying, "How long, O Lord, who are holy and true, will You not judge and avenge our blood on those who dwell on the earth?" This symbolically means, over the fact that the Last Judgment was so long delayed, and that those who did violence to the Word and to the Lord's Divinity were not being removed.
"How long, O Lord, will You not judge" means, symbolically, "Why is the Last Judgment delayed?" And "how long will You not avenge our blood" means symbolically, "Why in accordance with justice are those not condemned who have done violence to them because of their acknowledgment of the Lord's Divine humanity and their life according to the truths of His Word?" Blood symbolizes the violence done to them (no. 379).
"Those who dwell on the earth" mean evil people in the world of spirits, from whom they were being protected so as not to be harmed.