If Zechariah says the Lord saves Jerusalem, how can preterists say this happened in A.D. 70, when it was destroyed?

Zechariah speaks of “all the peoples” (Zech. 12:2), “and all the people of the earth will gather against it (Jerusalem)” (Zech. 12:3), and “I will gather all the nations to fight against Jerusalem” (Zech. 14:2). These verses do not seem to be referring to the Romans in A.D. 70. Further on, Zechariah continues, saying: “On that day the Lord will shield those who live in Jerusalem” (Zech. 12:8), and: “Then the Lord will go out and fight against those nations, as he fights on a day of battle” (Zech. 14:3). I concluded that none of this fits with what happened to Jerusalem in A.D. 70, when the Romans conquered Israel. Finally, the passage says that the Lord will save Israel on that day (Zech. 14:3), whereas in A.D. 70, the Lord judged Israel, as written in Luke 21:20–24. So how can preterists say that Zechariah is speaking of A.D. 70 if, in this passage, the Lord is saving His people? james stuart russell the parousia The AD 70 Doctrine description