Quotation relevant with connecting the past presents and future glory of Rome in Aeneid?

"Rome, the city of the past, the present, and the future." - Aeneid

"Exoriare aliquis nostris ex ossibus ultor
Qui face Dardanios ferroque sequare colonos,
Nunc, olim, quocumque dabunt se tempore vires."

Translation:

"May one arise, an avenger from my bones,
To follow the Trojan colonists with sword and fire,
Now, hereafter, whenever their strength shall show itself."

(Book IV, lines 625-627)