Gerlinda, I think the "He" in Daniel 9:27 is Jesus that confirmed the New Covenant with the many. He is the one that became our salvation by his death on the cross and resurrection on the third day. It was the Acceptable Year, or Appointed Time. God had a plan and set it in motion at the beginning of time. The End of Time is also an appointed time--we just don't know the exact day and hour so we must watch the signs that Jesus gave us.
Daniel 9:24 “Seventy weeks are determined upon thy people and upon thy holy city, 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.
These are 70 weeks of days. I don’t see weeks of weeks, which would add up to 490 years. These are 490 days.
Luke 4:17-21 “There was delivered unto him the book of the prophet Esaias. And when he had opened the book, he found the place where it was written, The Spirit of the Lord is upon me, because he hath anointed me to preach the gospel to the poor; he hath sent me to heal the brokenhearted, to preach deliverance to the captives, and recovering of sight to the blind, to set at liberty them that are bruised, To preach the acceptable year of the Lord. And he closed the book, and he gave it again to the minister, and sat down. And the eyes of all that were in the synagogue were fastened on him. And he began to say unto them, This day is this scripture fulfilled in your ears.
The year [490 days] of the Lord began at his baptism and ended at Pentecost. That was 490 days. The Acceptable Year was the year he was crucified and arose. The building of the 3rd Temple began at Pentecost.
Daniel 9:25 Know therefore and understand, that from the going forth of the commandment to restore and to build Jerusalem unto the Messiah the Prince shall be seven weeks, and threescore and two weeks: the street shall be built again, and the wall, even in troublous times.
[26] And after threescore and two weeks shall Messiah be cut off, but not for himself: [in the midst of the 63rd week] and the people of the prince [Titus] that shall come shall destroy the city and the sanctuary; and the end thereof shall be with a flood, and unto the end of the war desolations are determined. [27] And he [Jesus] shall confirm the [New] Covenant with many for one week [63rd week was Passion Week]: and in the midst of the week he shall cause the sacrifice and the oblation to cease [by his death and resurrection], and for the overspreading of abominations he shall make it desolate, even until the consummation, and that determined shall be poured upon the desolate.”
He became our High Priest of the New Covenant and there was no more need for animal sacrifice.
Hebrews 6:20 “Where the forerunner is for us entered, even Jesus, made an high priest for ever after the order of Melchisedec.
Hebrews 8:1 “Now of the things which we have spoken this is the sum: We have such an high priest, who is set on the right hand of the throne of the Majesty in the heavens;
Acts 7:56 “Behold, I [Peter] see the heavens opened, and the Son of man standing on the right hand of God.”