End of the AgeChrist was asked in Mat. 24 
“and what shall be the sign of thy coming, and of the end of the world?” So He was asked 2 things-
  1. What is the sign of His coming
  2. What is the sign of the end of the world? AGE if you will. 
So how did He answer them, what is the sign of His coming and is that the same as the end of the Age?
False Christs – 1st seal – White Horse
Wars rumours of wars, – 2nd seal – Red Horse
Famines – 3rd seal – Pale Horse
Pestilences earthquakes in different places – 4th seal – Black Horse
Just the beginnings of sorrow
Persecution of the saints – 5th seal – The Great Tribulation
Then in verse 14 He gives the sign of when these things will begin in the end time. The first 4 seals have been at work for 2000 years and there has been major persecution of the saints for that long as well.
But the disciples asked Him what would be the sign of His coming and the sign of the end of the world/age.
(Mat 24:14)  And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come.
So here He is answering them. When the Gospel has been preached to the world for a witness in all nations, the time of the end would begin. That is the sign that His people must be looking for, The Gospel Witness which we know corresponds with the Philadelphia ERA which was tasked to support the work that Christ was doing.(Opening the Doors of mass media to reach the world in power)
So did the end come when that work was finished? When Mr. Armstrong said that it was finished? No, so what did he mean the end would come? And was the end the sign that He was coming. Yes to both. The End time AGE of God’s Church the Laodicean ERA began at this point in time.
When He said that the end shall come did He mean the end of the age? Yes in one sense He did because the Coming of Christ and the Sign that we were in the last era of the church began when Philadelphia ended.
It all points to the same event. The Closing of the Witness work and the Rise of the Laodicean ERA were the signs that Christ gave to His disciples of His Coming AND the End of the AGE!
Notice His use even of the word SHALL COME. These are the signs of His coming AND of the end of the AGE. Again the signs were the finishing of the Philadelphian Era and the Beginning of the Laodicean time Phase or ERA WERE the signs of the end of the AGE and Christ’s return would happen. You can see how this phrase “the end shall come” is found in other places indicating that a process or period of time has begun; Rom 10:13  For whosoever shall call upon the name of the Lord shall be savedWe all understand that shall be saved is a process of time just as in Matt. 24:14 the phrase “then shall the end come” is speaking of the beginning of a process of time that culminated in the coming of Christ and the end of man’s rule on the earth.

He is telling us in this age to WAKE up and get ready for we are REALLY in the Gun lap at this time. We are the last generation of man’s rule and all these things will happen in our lifetimes. 
Mat 24:42  Watch therefore: for ye know not what hour your Lord doth come. 
Mat 24:43  But know this, that if the goodman of the house had known in what watch the thief would come, he would have watched, and would not have suffered his house to be broken up. 
Mat 24:44  Therefore be ye also ready: for in such an hour as ye think not the Son of man cometh. 
Mat 24:45  Who then is a faithful and wise servant, whom his lord hath made ruler over his household, to give them meat in due season? 
Mat 24:46  Blessed is that servant, whom his lord when he cometh shall find so doing. 
Mat 24:47  Verily I say unto you, That he shall make him ruler over all his goods. 
Mat 24:48  But and if that evil servant shall say in his heart, My lord delayeth his coming; 
Mat 24:49  And shall begin to smite his fellowservants, and to eat and drink with the drunken; 
Mat 24:50  The lord of that servant shall come in a day when he looketh not for him, and in an hour that he is not aware of, 
Mat 24:51  And shall cut him asunder, and appoint him his portion with the hypocrites: there shall be weeping and gnashing of teeth. 
The watch work takes on real meaning when we see these signs of Christ’s return and the end of the age. Now the work of preparing ourselves(the bride) takes on greater meaning and far more urgency because the time is short. The world is going into chaos and when the dust clears, the Beast Power will have taken control.
It makes total sense that He meant the end of the ERA of the witness(The Philadelphian ERA) then consequentially the beginning of the Laodicean ERA which would signal to His people the end of the age that the disciples had asked about earlier. So if Philadelphia has ended then Laodicea has begun.
They wanted to know the sign. The end of the Philadelphian ERA was the sign that the last era of the church had begun and the last generation had begun as will see verse 34;(Mat 24:34)  Verily I say unto you, This generation shall not pass, till all these things be fulfilled. After this verse in verse 42 as shown above the Watch Work for the end time church is described.
We are that end time generation who shall see all these things come to pass. We are to be watching and urgently preparing for the things that are coming soon upon the whole world which will result in the return of Christ. Are you ready?