[Nell]

In summary, the Tribulation is the 7-year time period in the end times in which humanity’s decadence and depravity will reach its fullness, with God judging accordingly. Many Christian scholars have the understanding of Daniel’s 70 sevens, with 483 years having passed from the decree to rebuild Jerusalem to the cutting off of the Messiah, this leaves one seven-year period to be fulfilled in terms of Daniel 9:24: “to finish transgression, to put an end to sin, to atone for wickedness, to bring in everlasting righteousness, to seal up vision and prophecy and to anoint the most holy.” This final seven-year period is known as the tribulation period—it is a time when God finishes judging Israel for its sin.

Daniel 9:24-27 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.
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: and the people of the prince 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 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.

This passage speaks of 70 weeks that have been declared against “your people.” Daniel’s people are the Jews, the nation of Israel, and Daniel 9:24 speaks of a period of time that God has given “to finish transgression, to put an end to sin, to atone for wickedness, to bring in everlasting righteousness, to seal up vision and prophecy and to anoint the most holy.” God declares that “seventy sevens” will fulfill all these things. This is 70 sevens of years, or 490 years. (Some translations refer to 70 weeks of years.) This is confirmed by another part of this passage in Daniel. In verses 25 and 26, Daniel is told that the Messiah will be cut off after “seven sevens and sixty-two sevens” (69 total), beginning with the decree to rebuild Jerusalem. In other words, 69 sevens of years (483 years) after the decree to rebuild Jerusalem, the Messiah will be cut off. Biblical historians confirm that 483 years passed from the time of the decree to rebuild Jerusalem to the time when Jesus was crucified.

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.

Daniel 9:27 gives a few highlights (lowlights?) of the seven-year tribulation period: “He will confirm a covenant with many for one ’seven.' In the middle of the ’seven' he will put an end to sacrifice and offering. And on a wing of the temple he will set up an abomination that causes desolation, until the end that is decreed is poured out on him.”

The person of whom this verse speaks is the person Jesus calls the “abomination that causes desolation” (Matthew 24:15) and is called “the beast” in Revelation 13. Daniel 9:27 says that the beast will make a covenant for seven years, but in the middle of this week (3 1/2 years into the tribulation), he will break the covenant, putting a stop to sacrifice.

Revelation 13 explains that the beast will place an image of himself in the temple and require the world to worship him. Revelation 13:5 says that this will go on for 42 months, which is 3 1/2 years. Since Daniel 9:27 says that this will happen in the middle of the week, and Revelation 13:5 says that the beast will do this for a period of 42 months, it is easy to see that the total length of time is 84 months or seven years.

Revelation 13 13 And I stood upon the sand of the sea, and saw a beast rise up out of the sea, having seven heads and ten horns, and upon his horns ten crowns, and upon his heads the name of blasphemy.
2 And the beast which I saw was like unto a leopard, and his feet were as the feet of a bear, and his mouth as the mouth of a lion: and the dragon gave him his power, and his seat, and great authority.
3 And I saw one of his heads as it were wounded to death; and his deadly wound was healed: and all the world wondered after the beast.
4 And they worshipped the dragon which gave power unto the beast: and they worshipped the beast, saying, Who is like unto the beast? who is able to make war with him?
5 And there was given unto him a mouth speaking great things and blasphemies; and power was given unto him to continue forty and two months.

Also see Daniel 7:25, where the “time, times, and half a time” (time=1 year; times=2 years; half a time=1/2 year; total of 3 1/2 years) also refers to “great tribulation,” the last half of the seven-year tribulation period when the beast will be in power.

Daniel 7:25
25 And he shall speak great words against the most High, and shall wear out the saints of the most High, and think to change times and laws: and they shall be given into his hand until a time and times and the dividing of time.

For further references about the tribulation, see Revelation 11:2-3, which speaks of 1260 days and 42 months, and Daniel 12:11-12, which speaks of 1290 days and 1335 days. These days have a reference to the midpoint of the tribulation. The additional days in Daniel 12 may include the time at the end for the judgment of the nations (Matthew 25:31-46) and time for the setting up of Christ’s millennial kingdom (Revelation 20:4-6).