"The gentile times have ended...," was the cry of the Watchtower. However, how long are those Gentile Times according to the Bible? When did they start and end? I think I may have found the key....
"And when ye shall see Jerusalem compassed with armies, then know that the desolation thereof is nigh. Then let them which are in Judaea flee to the mountains; and let them which are in the midst of it depart out; and let not them that are in the countries enter thereinto. For these be the days of vengeance, that all things which are written may be fulfilled. But woe unto them that are with child, and to them that give suck, in those days! for there shall be great distress in the land, and wrath upon this people. And they shall fall by the edge of the sword, and shall be led away captive into all nations: and Jerusalem shall be trodden down of the Gentiles, until the times of the Gentiles be fulfilled." - Luke 21:20-24 KJV
Verse 24 has the key phrase here. This passage clearly has to do with the destruction of Jerusalem in A.D. 70 and I don't think anyone here would argue with me on that one.
This phrase in verse 24, as it is the linch pin to the Watchtower's entire system. It the Gentile times are not 2520 days, then the Watchtower's 1914 doctrine falls apart. And if their 1914 doctrine falls apart, they have not been chosen as God's mouthpiece or organization.
The question should be asked, how long were the "Gentile times"?
"And there was given me a reed like unto a rod: and the angel stood, saying, Rise, and measure the temple of God, and the altar, and them that worship therein. But the court which is without the temple leave out, and measure it not; for it is given unto the Gentiles: and the holy city shall they tread under foot forty and two months." - Revelation 11:1-2 KJV
Notice it mentions the temple of God and the Holy City. Just in case you didn't figure out by this obvious statement which city this is, there is an explainable in verse 8.
"And their dead bodies shall lie in the street of the great city, which spiritually is called Sodom and Egypt, where also our Lord was crucified." - Revelation 11:8 KJV
This is clearly Jerusalem. Notice the exact same phrase is used:
"Jerusalem shall be trodden down of the Gentiles, until the times of the Gentiles be fulfilled." - Luke
"The holy city shall [the Gentiles] tread under foot forty and two months." - Revelation
So the Gentile times are 42 months or 1260 days. Notice it is NOT 7 Times, or 2520 days.
This is fulfilled in the events of the Jewish-Roman War, in the 42 months from A.D. 67-70. The fact that the Gentile court is spared I think symbolizes the shift in God's favor, from the Jews to the Gentiles.