Where was he?
Jesus said said to his followers that some of them would live to witness his return to earth:“Truly I say to you, there are some of those who are standing here who will not taste death until they see the Son of Man coming in His kingdom”. Matthew16: 27-28.
Jesus then goes further telling them which “signs” to look out for but this time including the whole “generation” and ending again with:
“Truly I tell you, this generation will certainly not pass away until all these things have happened “Matthew24:25-34.
Mark13:26-30 says the same as does Luke21:27-32.
So it is clearly Jesus himself states that he will be seen again in that generation of that time and that it was to happen some time during the generation of those to whom he was speaking. It cannot be made more clear to his audience that this event would not be in the distant future, he told them that some of them who were there listening to him would still be alive to see it.
Even at his trial he told the priests and the council :“you will see the Son of Man sitting at the right hand of power, and coming on the clouds of heaven.“” Matthew26: 63, 64. And the no show hadn’t gone nu-noticed by the people either:
2Peter 3:4 “Where is this ‘coming’ he promised? Ever since our ancestors died, everything goes on as it has since the beginning of creation.”
Yet even allowing for all those Jews alive at the time of the promise and living another hundred + years, Jesus simply failed to show and keep his promise.
Does a single one of those he made the promise to mention his return "coming on a cloud"? It will be interesting to hear what Christians have to say about this abysmal damp squib of a failure to keep a promise, his promise.