A week before His resurrection on Easter Sunday, Jesus made, what is called, His triumphal entry into Jerusalem among much pomp and fanfare. While the people were happy and celebrating His entry into Jerusalem (Luke 19:35-40), Jesus was sad and wept over the city (Luke 19:41). At that point Jesus announced to the people, "If you had know in this day, even you, the things which make for peace" (Luke 19:42)! Our Lord prophetically described the judgment that would come upon Jerusalem and her people because of their rejection of Him (Luke 19:43-44a). Then He declared the reason for such judgment upon the city of Jerusalem which He greatly loved. It would be "because you did not recognize the time of your visitation" (Luke 19:44b). How was it that Israel is being held accountable for "this day" (Luke 19:42) and "the time of your visitation" (Luke 19:44b)? How were the Jews to have known when her Messiah was to visit them? Israel was to know these things because of prophecy.
Ice, Thomas D., "The Time of Your Visitation" (2009). Article Archives. 65.