I encourage you to watch the entire video. It is 36 minutes long. An essential quote from the video:

The 70th week of Daniel must logically follow the 69th week of Daniel. From the going forth of the commandment to rebuild the temple of Jerusalem (Daniel 9:24-25), Ancient Israel was given 70 weeks (literally 490 years, as the Bible teaches a day is a year in prophecy [Numbers 14:34, Ezekiel 4:4-6]) to repent, and accept the Messiah as Saviour. There is no reason to stop the countdown for Israel to repent, unless they did repent like Ninevah in Jonah's day. In the past, Ninevah was given 40 days until their destruction, but they repented and thus were not destroyed. Israel was given 490 years to repent. They however, did not repent. Therefore there is absolutely no reason for there to be a gap between the 69th week and the 70th week of Daniel, especially considering that the other 69 weeks were all consecutive.

The Lord foresaw that Israel would not repent, and added to the prophecy of Daniel 9:27 that for the overspreading of abominations Jerusalem would be made desolate. The Christians saw this prophetic event of Daniel 9:27 fulfilled, when the abomination of desolation stood in the holy place, Jerusalem being encompassed by armies, and fled as Christ commanded them to do. If they had interpreted the 70 weeks of Daniel prophecy the way Christians do today with this false doctrine they would have all been destroyed. The idea that the 70th week of Daniel has not been fulfilled is utterly refuted by both Christ, and every single Christian that escaped with their lives away from Jerusalem.