Let’s unpack this verse by verse:
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.
Daniel 9:24
70 Weeks = 490 Years (using the 1 day for a year prophetic principle).
To finish transgression, make an end of sins, make reconciliation for iniquity, and bring in everlasting righteousness is referring to Jesus’ death on the cross.
The anointing of the most Holy occurred at Jesus’ baptism:
How God anointed Jesus of Nazareth with the Holy Ghost and with power: who went about doing good, and healing all that were oppressed of the devil; for God was with him.
Acts 10:38
You can clearly see these 70 weeks are about the Messiah, not the antichrist.