It's not a matter of following rules. Interpretation of spiritual truths can be both objective and subjective at the same time. That's why Jesus spoke so often in parables and exclaimed, "He who has ears to hear, let him here".
So often we get into this mind-set that it's one interpretation verses the other. Sometimes there's more grey area than we realize. It's true that the NT is fulfilled in Jesus. All the promises to Abraham (and subsequently God's people) are fulfilled in Jesus. There is no doubting that, for anyone who puts their faith in Jesus.
In my counter arguments, I do not mean to diminish your point at all. In fact, I would like to say that the life, ministry, and testimony of Jesus is THE cornerstone. Prophecy is not the cornerstone. Jesus and his teachings is the cornerstone. There is no point to prophecy at all without reference back to the teachings of Jesus.
He is the Messiah.
He is the master.
He is the boss.
He is the ultimate fulfillment of God to his people.
When you say that the 70 weeks prophecy was fulfilled 3.5 years after Jesus' death, I do not disparage your point of view that Jesus is the ultimate fulfillment of God's Kingdom. In fact, I think you are right. That is exactly why Jesus said, "Repent, for the Kingdom of Heaven is at hand".
However, I do not think the 70 weeks prophecy is limited to the life, death, resurrection of Jesus and then 3.5 years after this point, as the only interpretation to the fulfillment of prophecy. I hope you get me here. I'm not saying you're wrong; I'm only suggesting that your interpretation is incomplete.
Jesus is the Christ, and his birth, life, testimony, death, and resurrection is the fulfillment of all of the promises to Abraham. But, the 70 weeks is not
only a prediction of Jesus' death; it is a prediction regarding God's plan for humanity as a whole.
Jesus' life, death, and resurrection is a
part of that plan. For example, consider this part: In Matthew 24:15, Jesus says,
"
When ye therefore shall see the abomination of desolation, spoken of by Daniel the prophet, stand in the holy place, (whoso readeth, let him understand
"
This is a direct reference to Daniel 9:27. The admonishment that "let him understand" means this is an important verse regarding the future of the world, (which is the context of what he's saying here, i.e. prophecy). The abomination of desolation is referenced in the context of a 7 year agreement, the middle of which (i.e. 3.5 years) results in abominations and a ceasing of sacrifices.
Jesus then goes on to explain that,
as a result of this abomination, people should flee, because this is the start of great tribulation, such as the world has never seen, nor will ever see again. The Revelation puts this period of time at 3.5 years. It refers to this period of time in days, (i.e. 1,260 days: Revelation 12:14), months, (Revelation 11:2) and years (Daniel 9:27). This period of time is also referenced in Daniel 7:25.
This 3.5 years is extremely important in prophecy and coincides perfectly with the Great Tribulation, which is half of 7 years, exactly the abomination period mentioned in both Daniel 9:27 and Matthew 24:15.
We can't just ignore this connection even if the result sounds strange, that God postponed a final, 7 year period of prophecy.
Jesus is the Christ. That means he is the anointed one. There is no denying that; his
birth is indication that he is the anointed one. That is not the
only meaning of the 70 weeks prophecy. The fulfillment of this prophecy is not just the death and resurrection of Jesus; it is the complete and total take-over of God upon this world. Satan is cast down; he is locked up; Jesus reigns forever.
Yes, Jesus is the fulfillment of the New Covenant, or New Agreement, or New Testament, whichever you'd like to call it. They all mean the same thing. But, no sincere person could look at the world now and say that everlasting righteousness as been established on the earth. There is still more to the 70 weeks prophecy to be fulfilled. That is not a slight against Jesus and his death/resurrection.
In fact, the Revelation is a revelation of Jesus; he is not done expressing who he is. In fact, it in narrowmindedess not the part of those who view Jesus as simple an "ultimate sacrifice" rather than the ultimate expression of the Kingdom of Heaven.
For example, consider the mark of the Beast. Jesus said that we cannot work for God and money without cheating on one or the other, that we will love one and hate the other, and that our new, full-time job is to work for God's Kingdom of Love by going into all the world to teach others to do the same.
The mark of the Beast is described as a mark without which no one will be able to buy or sell. It is the next generation of money. If you want to pay the bills, take care of your family, or just put bread on the table, you must take the mark.
Here we have an expression of Jesus' teachings via prophecy; God or money.
Recall that Jesus said the abomination of desolation, spoken of by Daniel 9:27 would mark the start of "great tribulation such as the world has never seen nor ever will see", and the mark of the Beast is part of the Great Tribulation. Where, in the 3.5 years after Jesus' death (or any year near his death) do we see a global, economic system where
everyone must use a particular mark to buy or sell?
We don't. That technology is only now becoming mainstream.
In summary, I do not dispute your claims that Jesus fulfilled the 70 weeks to some degree. I'm only saying there is evidence that there is more to the interpretation.