Though the Christians would not know exactly when their Lord was coming (in judgment on Judaism), there did seem to be some general signs.
- Jesus assures them that the destruction he is prophesying will take place in their generation (not ours).
- This time of judgment is a "coming" of Christ, though not the second coming. For more on this, please read The Destruction of Jerusalem.
- By far the best candidate is the 40-year "grace period" between the year of Jesus' death and the destruction of Jerusalem by the Romans (70 AD) in the First Jewish War (66-73 AD).
- Note: Jesus nowhere says that we will be able to predict the end of the world by watching political or meteorological events.