Daniel 8:13 & 14
Then I heard a holy one speaking, and another holy one said to him, 'How long will it take for the vision concerning the daily sacrifice, the rebellion that causes desolation, and the surrender of the sanctuary and of the host that will be trampled underfoot?' He said to me, 'It will take 2,300 evenings and mornings; then the sanctuary will be reconsecrated.'
There have been many attempts to explain this prophecy and its relation to future end time events. To rightly understand this passage, we must remember that this portion (unlike the part before it) of the Book of Daniel was written in Hebrew instead of Aramaic. The Jewish day begins with the evening due to the description of a day in Genesis 1:5. We can therefore know that this is speaking about the fact that the desolation of the temple would last for 2300 Jewish days. The temple was cleansed on December 25, 165 B.C. and if we count back we see that the desolation and persecution under Antiochus began at this time. 2300 days is about seven years and that corresponds to the Great Tribulation of Revelation. Although Daniel's vision does not give us any clue about the day that Jesus will return, it does show us the truth of the length of the Great Tribulation.