Noooooo, no one is talking of 70 weeks of weeks and your explanation (the whole of it), starting from the decree is just far far from the truth.
Don't worry, i'm come to give you understanding, but it is a difficult one. i know you won't agree but it is what it is.
You're not going to give me any understanding, because you yourself don't understand. I was studying this before you were born and the Holy Spirit has given me no other interpretation of this. You mentioned "weeks" I clarified that they were "weeks of years." I gave you the book of Nehemiah to read which is a detailed account of the restoring and rebuilding of Jerusalem is fulfilled.
As proof to you and Lucy and anyone else who doesn't believe, you are first going to see the church removed and following that, the antichrist will make his covenant for one seven year period with Israel, which will be the fulfillment of that last seven years of the decree of seventy seven year periods given to them in Dan.9:24.
That last seven years is what is coming and will be to finish transgression, to put an end to sin, to atone for wickedness, to bring in everlasting righteousness, to seal up vision and prophecy and to anoint the Most Holy Place. And during that same seven years, the prophecy of Dan.2:31-46 will also be fulfilled, when that Rock/Jesus falls on the feet of the statue and smashes it to pieces, blown away by the wind and never to be found again, which represents the end of all human government.