Jeffro
The fact that some things they expected to happen didn’t happen isn’t evidence that it will happen at a later time. They were just wrong.
It’s also amusing that you recognise that the ‘celestial’ signs were supposed to happen after the ‘tribulation’ but ignore the fact that Jesus’ presence is supposed to happen after those ‘signs’.
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Events that are expected come at the appropriate time and not the time of our choosing and the events that did occur give us confidence that future, expected events will occur at the appointed time.
Jesus' presence or Parousia is described by many events which proved that he was present marked by its definite beginning as King ruling from the appointed time of 1914 CE to be climaxed by the Great Tribulation with the coming of the Son of Man for such events are built on the earlier fulfilment of prophecies or signs pertaining to Jerusalem. In short, the events of the First century in response to that first of three questions undergo the future fulfilment relating to Jesus' answer to the two questions in Matt. 24:3.
scholar JW