Zadok’s vision of Absalom riding out to make peace with his father may indeed have happened, but had Shimei’s rocks not interrupted the vision, it might have continued so that Zadok would have seen the mission fail. And having seen it fail, he might have been able to take action to make it succeed (assuming, of course, that he wasn’t simply viewing an inevitable future).
Shimei is drawn directly from the Biblical text, where he repeatedly curses and throws rocks at David’s group. But when he is later brought before David, David surprises his court by sparing Shimei’s life.
Have you ever had dreams or visions of the future? If so, did you believe that the future that you saw was fixed or mutable? Did they turn out to be true?
If you believed them to be mutable, did you see something that you wanted to change for the better? Were you inspired to do so, and did it work? Would you have taken action to change it had you not had the vision or dream?