So, the events of 70 AD…… the end of the age, destruction of the temple with Jesus establishing His kingdom on earth in the hearts of men….His coming in the clouds of judgment, estimates of 1 million Jews killed…. It was the generation that Jesus was talking to that saw all of this.
You need to read and consider the descriptions of the promised event. Something, as stated, that all the tribes on earth would see, all men judged, etc.
The 70ad events do not fulfil the description or the prophesy, although Christians of that period did believe they were the end times and expected the described event to happen within their lifetime.
They were disappointed, the prophesy was pushed forward.
