Matt 16: 27-28, "For the Son of Man will come in the glory of His Father with His angels, and then He will reward each according to his works.28 Assuredly, I say to you, there are some standing here who shall not taste death till they see the Son of Man coming in His kingdom.
I know that the Mount of Transfiguration is the next verse after these and begins in Matt 17: 1. The problem with your interpretation is that Jesus did not reward every man according to his works at the Mount of Transfiguration. Nor at Pentecost or any other time except 70 A.D.
I see the problem.
Jesus is slightly problematic.
He sometimes speaks one sentence in one context and then another in a different context.
So He states John the baptist is Elijah, if you want to believe it.
So He talks about His return to earth at the end at the time of final judgement.
He then mentions that the coming of the Kingdom will start within the lifetime of the disciples.
And theologically there is a dispensational shift.
Jesus preached the Kingdom of God is near. Then the Kingdom of God is coming.
He then introduces the indwelling Holy Spirit as the teacher of spiritual truth for the believer.
Until this time, faith was a ceremonial experience, without spiritual gifting and communion.
Paul extends this to us being the Holy Temple of God.
The falling of the Holy Spirit on His people, Jews and gentiles alike again changed everything.
We then get ministries of apostles, prophets, teachers etc.
So I would conclude the Kingdom started at pentecost. A new dispensation of communion with mankind,
openned with the gift of tongues.
I do not like this view, but it fits with how it is written and what is written about the reality of the
spiritual life in the believer. The age of the church is so different to the age of Israel and the temple,
it is hard to resolve. AD70, the age of the temple stopped, dead.
This is as far as I have gone, but it is a depth I am happy with. Need I know more?
For me it is learning to walk like Jesus, a real question. Aim at perfection? Again do I like
this idea or approach? No. But God does. And I must carry my cross.