Jesus predicts that some will not die until he comes in his kingdom, but did this occur? Matthew 16:28


  I tell you the truth, some who are standing here will not taste death before they see the Son of Man coming in his kingdom.


Mark 9:1


  And he said to them, "I tell you the truth, some who are standing here will not taste death before they see the kingdom of God come with power.


Luke 9:27


  I tell you the truth, some who are standing here will not taste death before they see the kingdom of God


Obviously everyone that heard Jesus say this is no longer living, so it seems this prediction by Jesus did not take place. Perhaps I am misunderstanding what the 'Kingdom of God' is. Or maybe Jesus is saying that salvation brings life, and physical death is not important. I think that is was the pervading belief among early Christians that they would live to see the second coming of Christ, as evidenced by some of the letters of Paul. How am I misinterpreting this?
The very next story in each of those passages is the transfiguration. My interpretation: The kingdom is here! Jesus is alive and reigning through his church and in the hearts of the saints. Because the Kingdom has an already/not-yet character, it has not yet come in its fullness, but it is here. And Peter/James/John saw in the transfiguration a preview of the fullness which is to come, Christ in his power and glory.