The timeframe is explicit in the part of the quotes you omitted. Here they are again. Some of the people standing there with Jesus will still be alive when the Son of Man returns.JehovahsWitness wrote:Where are the TIME REFERENCES to the first century in this scripture? The scripture only says that the son of man would be "ashamed of them" it does NOT state that he would find them still alive. To illustrate: I should think that present day Americans are ashamed of their forefathers that owned slaves. This does not mean those slave owners expected to be alive in 2015 or that modern day americans expect to find any of those slave owners still alive.Mark 8,9
8:38 If anyone is ashamed of me and my words in this adulterous and sinful generation, the Son of Man will be ashamed of them when he comes in his Fatherâ€™s glory with the holy angels.â€� â€�
There is no indication of expectations in terms of time on the part of the generation being referred to or of the time frame when the "son of man" would "come" (returen).
OQD: The New Testament tells us that Christâ€™s departure from Earth 2,000 years ago will be short-lived and his return is imminent
If you want to say that the generation referred to is the one that will be alive when the Son of Man returns, then why should Jesus say that this generation will not pass away before they see it? This is like saying that the people who will be alive when some future event happens will not be dead when it happens. It makes no sense to say something like that. Considering the connections to the "not taste death" passages, there is only one reasonable meaning that can be given to the phrase "this generation" and that is the "this generation" that Jesus was living in.Mark 8,9
8:38 If anyone is ashamed of me and my words in this adulterous and sinful generation, the Son of Man will be ashamed of them when he comes in his Fatherâ€™s glory with the holy angels.â€�
9:1 And he said to them, â€œTruly I tell you, some who are standing here will not taste death before they see that the kingdom of God has come with power.â€�
27 For the Son of Man is going to come in his Fatherâ€™s glory with his angels, and then he will reward each person according to what they have done.
28 â€œTruly I tell you, some who are standing here will not taste death before they see the Son of Man coming in his kingdom.â€�
26 Whoever is ashamed of me and my words, the Son of Man will be ashamed of them when he comes in his glory and in the glory of the Father and of the holy angels.
27 â€œTruly I tell you, some who are standing here will not taste death before they see the kingdom of God.â€�
Paul and the Synoptic Gospel writers were saying that Jesus was going to come back when some of the people who saw Jesus in life would still be alive. John and Acts were written when it was no longer possible to believe that and changed the story. John does it rather clumsily by omitting the Olivet Discourse and making the "not taste death" be a mistake. The always clever Luke in Acts does a terrific tap dance around it.