(Hebrews 1:1-2) 1 God, after He spoke long ago to the fathers in the prophets in many portions and in many ways, 2 in these last days has spoken to us in His Son, whom He appointed heir of all things, through whom also He made the world.
The book of Hebrews is an epistle written to Jews (or Hebrews) specifically. That is why when you see "the last days" it again refers to the last days of the Jewish nation, not planet earth.
(Hebrews 9:26-28) 26 Otherwise, He would have needed to suffer often since the foundation of the world; but now once at the consummation of the ages He has been manifested to put away sin by the sacrifice of Himself. 27 And inasmuch as it is appointed for men to die once and after this comes judgment, 28 so Christ also, having been offered once to bear the sins of many, will appear a second time for salvation without reference to sin, to those who eagerly await Him.
(Hebrews 10:1) 1 For the Law, since it has only a shadow of the good things to come and not the very form of things, can never, by the same sacrifices which they offer continually year by year, make perfect those who draw near.
"Come" in verse 10 is the Greek word "mello", or "a shadow of the good things about to come".
(Hebrews 10:25) 25 not forsaking our own assembling together, as is the habit of some, but encouraging one another; and all the more as you see the day drawing near.
(Hebrews 10:37) 37 FOR YET IN A VERY LITTLE WHILE, HE WHO IS COMING WILL COME, AND WILL NOT DELAY.
I do not think scripture could be any clearer than this. It is now 63AD. You are a Jew and you receive this epistle. You know that Jesus has prophesied that your generation will not all pass away before His second coming, and the destruction of the temple. You read "for yet a very little while". What would you have understood that to mean? Would you have thought it meant 2000+ years? No. You would have understood it to mean just what it says that Christ's promised coming was imminent to you and your generation. Considering that the temple was destroyed just a few years later, and Jesus tied his coming to this destruction, you can see why the writer said "for yet a very little while", and Christ did come.
(Hebrews 13:14) 14 For here we do not have a lasting city, but we are seeking the city which is to come.
"Come" is the Greek word "mello", or "the city which is about to come". Also notice the writer's eternal emphasis on a place not physical. He's not looking for a physical kingdom to be established here. He's looking, like Abraham, for the city of God elsewhere.
