TIME FRAME OF BIBLE PROPHECY
Those still looking for the second coming of Christ often say that God's time frame is not the same as ours. That all prophecy is written in God's time frame. I am going to show you some Scriptures that very clearly is using man's time frame when it comes to the last days.
Hebrews 1.1&2 states, "God, having of old time spoken unto the fathers in the prophets by divers portions and in divers manners, 2 hath at the end of these days spoken unto us in his Son, whom he appointed heir of all things, through whom also he made the worlds;" ASV, biblegateway.com. Most other translations say, "in these last days." Is this in God's time frame? If it is that would say that God has last days, and that Christ was in them. Well that makes no sense. You already pointed out that God is eternal, and that he has no last days. So, obviously this was referring to last days in man's time frame, and Christ was in those last days.
I John 2.18 states, "Little children, it is the last hour: and as ye heard that antichrist cometh, even now have there arisen many antichrists; whereby we know that it is the last hour." Last hour? Whose last hour? Was it God's last hour? Of course not. God doesn't have a last hour. Obviously this is another human time frame. John here plainly states that he and the people he was writing to were in the last hour. John and the people he wrote to are long gone, therefore that indicates to me, so is the last hour.
So here are examples of the Bible using a human time frame in writings about prophecy. Obviously man was supposed to understand prophecy in his time frame. This means that all Bible Prophecy is written in man's time frame. And why shouldn't it be? Otherwise there would be no way to understand Bible Prophecy