Read God's Word Please, then study the text:
The question is, who is the he? The traditional view of this passage is that "he" here refers to the Antichrist. The Antichrist will confirm a covenant and stop sacrifices that at some point a future will resume, and set up the Abomination of Desolation. Preterists say that he refers to the real Christ; Jesus Christ is actually the one that causes sacrifices to stop by sacrificing himself. As far as the overspreading of abominations I don't know how they explain that.
So how do we know who the he is? We can know for sure who he is. The he of Daniel 9:27 does three things: he first confirms the covenant, he stops the daily sacrifices, and he sets up the Abomination of Desolation.
In Daniel 11 we have a discourse about the King of the North. When you get to verse 31, it talks about the Antichrist and his partners placing a abomination that makes desolate and stopping the sacrifices. This is absolute proof that the he of Daniel 9:27 is the Antichrist not the real Christ.
Daniel 11:31 (KJV) And arms shall stand on his part, and they shall pollute the sanctuary of strength, and shall take away the daily sacrifice, and they shall place the abomination that maketh desolate.
If you're not sure this is the Antichrist, read on what else this man does:
Daniel 11:36 (KJV) And the king shall do according to his will; and he shall exalt himself, and magnify himself above every god, and shall speak marvellous things against the God of gods, and shall prosper till the indignation be accomplished: for that that is determined shall be done.
Is that Jesus Christ speaking against the God of gods? Obviously not. It's the Antichrist exalting himself above all that is called God. The apostle Paul referred to the same thing. In 2nd Thessalonians 2:3-4 the apostle Paul said that day shall not come, speaking of the second coming, until there comes a rebellion first and that Man of Sin is revealed, the Son of Perdition, who exalts himself above all that is called God of that is worshiped and sits in the Temple of God claiming to be God. So both of these phrases talking about the Antichrist talk about him exalting himself above God and claiming to be God. Daniel 9:27 is speaking about the Antichrist which is also the reason that Preterism is a false doctrine and should not be believed.
The timing of the Confirmation of the Covenant is another issue that I have researched with great success. Certain things Jesus said that most Christians overlook unlock even the very day that this event will happen, as well as the day of the rapture.
There is nothing in the passage to indicate who the many (haRabim) refers to. However, Dan 12 does say that Daniel was sealed until later...
I believe the book of Revelation that came later showed us the rest of the story on that Antichrist covenant. Rev 17 talks about the Beast (AC) having a covenant with ten rulers who don't have a kingdom but have the power to make him king and then receive rulership with him. HaRabim can also be translated "the great" which is what Rav (rabbi) is connoted to mean when Jews call their teachers rabbi (my great one). The Ten Rulers are indeed great ones to have power over the earth and make him supreme, not Jewish ones.
Does this shed a little light on the subject? Be blessed and why not Blood-Bought, and you?