In view of Mark 9:1 why say the kingdom of God will come at Jesus' second coming?

> And he said to them, “Truly I tell you, some who are standing here will not taste death before they see that the kingdom of God has come with power.” (NIV) Jesus was in the presence of his followers when he made the statement in Mark 9:1 that there would be some alive to see the kingdom of God come. When I listen to the radio or watch TV the message I hear quite often is that Jesus will come and establish a kingdom and reign for 1,000 years. If someone could explain this contradiction I would appreciate it. I would prefer if when someone gives an answer that it be a biblical answer and not something based on a opinion. (people with a pre-millennium view)