If the covenant was with Israel, or Jacob, or Judah or Ephraim I would agree with you. But the covenant is confirmed with the many. The Bible never refers to Israel as "the many", but it does refer to the Nations and the Gentiles and the Kings of the Earth in this way.
Daniel 9
[1] In the first year of Darius the son of Ahasuerus, of the seed of the Medes, which was made king over the realm of the Chaldeans;
[2] In the first year of his reign I Daniel understood by books the number of the years, whereof the word of the LORD came to Jeremiah the prophet, that he would accomplish seventy years in the desolations of Jerusalem.
[3] And I set my face unto the Lord God, to seek by prayer and supplications, with fasting, and sackcloth, and ashes:
While Daniel was praying and mourning, the Angel Gabriel then appeared to Daniel to give him understanding.
Daniel 9
[20] And whiles I was speaking, and praying, and confessing my sin and the sin of my people Israel, and presenting my supplication before the LORD my God for the holy mountain of my God;
[21] Yea, whiles I was speaking in prayer, even the man Gabriel, whom I had seen in the vision at the beginning, being caused to fly swiftly, touched me about the time of the evening oblation.
[22] And he informed me, and talked with me, and said, O Daniel, I am now come forth to give thee skill and understanding.
[23] At the beginning of thy supplications the commandment came forth, and I am come to shew thee; for thou art greatly beloved: therefore understand the matter, and consider the vision.
Next, Gabriel explains to him that 70 weeks of punishment is determined for the sins of the children of Israel.
Daniel 9
[24] Seventy weeks are determined upon thy people [the descendant's of Israel] and upon thy holy city [Jerusalem], to finish the transgression, and to make an end of sins, and to make reconciliation for iniquity, and to bring in everlasting righteousness, and to seal up the vision and prophecy, and to anoint the most Holy.
Finally, Gabriel explains to Daniel that "the covenant with many" for one week (seven years), which is Israel's last and final week (70th week) of punishment for their sins, will consummate with the abomination of desolation in the middle of the week. This prophecy has nothing to do with the Church.
Daniel 9
[27] And he shall confirm the covenant with many for one week: and in the midst of the week he shall cause the sacrifice and the oblation to cease, and for the overspreading of abominations he shall make it desolate, even until the consummation, and that determined shall be poured upon the desolate.