Augustine of Hippo

Thus, the prophets' sayings are of three classes: one class refers to the earthly, a second to the heavenly Jerusalem, and a third to both simultaneously. It will be best to support this assertion with illustration. The prophet Nathan was sent to accuse King David of a grave sin and to foretell what evils were to befall him on this account. Now no one can fail to see that this prophecy refers to the earthly city. There are others like it, sometimes addressed to the people at large for their profit and well-being, and sometimes to an individual who merited a word from God to foreknow some event for the guidance of his temporal life.