From what I can tell, many Christians have the wrong understanding of the 70th week spoken of in Daniel 9:27. For this verse has been misread to pertain to the future, in which there is a seven-year tribulation period--in the middle of which the Antichrist breaks his peace treaty with the State of Israel, thus ushering in the Great Tribulation. Then a gap exists between the first 69 weeks of years and the 70th week of years, which we've been in. There may be a future seven-year tribulation period, but it would be Satan fulfilling (in his own way) Daniel 9:27--and God allowing it yet making short work of the Antichrist kingdom (final Babylon or Atlantis). (From the signs all around us, it appears that we are seeing Satan's revived Atlantis going into full swing now.)
This is the false popular teaching of this verse. In actuality, this verse is speaking of the (about) seven years from the baptism of Jesus by John the Baptist (in the Jordan River most likely in 27 AD) to the conversion of Saul (before he became Paul) of Tarsus on the road to Damascus (by 34 AD). And the last part of the verse concerns the destruction of Jerusalem in 70 AD.
Let's look at the verse itself: "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."
Jesus is confirming the New Covenant with many for one week of years. It is not (primarily) speaking of a future treaty--between the "man of sin" and the State of Israel--that lasts seven years, in the middle of which the former breaks the treaty and attacks the latter (Ezekiel 38-39). (As I've stated before, the battle of Armageddon will take place in North America, not in the Glorious Land (where the Israeli state is now). When John wrote of the gathering at a place "called in the Hebrew tongue Armageddon" (Rev. 16:16), he wasn't meaning the valley of Megiddo in Palestina. Megiddo, like all the other symbols (from Revelation 4 onward), is exactly that--a symbol: symbolizing the final battle between Christ Jesus and the Antichrist in North America--possibly in the State of Arizona because by then California may very well have broken off and much of it under water by then.)
Now let's look at 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." Jesus fulfilled or accomplished all that is spoken of in the above verse. By his death on the cross and his resurrection Jesus brought an end to sins and transgressions and thereby reconciling us to God. Paul says in Romans 5:6, "For when we were yet without strength, in due time Christ died for the ungodly." Further on in Romans 5 we have, "20Moreover the law entered, that the offence might abound. But where sin abounded, grace did much more abound: 21That as sin hath reigned unto death, even so might grace reign through righteousness unto eternal life by Jesus Christ our Lord."