The Bible teaches that the Great Tribulation lasts for three and one half years although popular teaching says it will be seven years. While it is true that Daniel’s 70th week lasts for seven years, the scripture teaches that only half of that period is what we know as the Great Tribulation. It says that the woman will be persecuted for a time, times, and half a time which equals three and one-half years. How do we know?
In Daniel 7:25 it describes the Great Tribulation as time, times and half a time: 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.
Revelation 13:5 approaches it from another angle. It says, 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.
Daniel 7:25 describes The Great Tribulation as lasting for time, times and half a time. In Revelation 13:5, it says power was given unto him to continue forty and two months, which is also exactly three and one half years. Then, Revelation 12:6 says, the woman fled into the wilderness where she hath a place prepared of God that they should feed her there a thousand, two hundred and three score days.
One thousand, two hundred and sixty days also equal forty-two months or three and half years. Each description in scripture of the duration of the Great Tribulation states that it is three and half years. It is stated in several different ways. The war in heaven and the Abomination of Desolation will occur three and one half years before the Armageddon.