Looking for signs.

I've probably written about this before but I'll mention it again.  We are told to stand watch and be ready for the return of Jesus.  There are many mentions of signs and warnings in the Bible.  Some are pretty generic and some are pretty specific. 

There is one however that will be hard to miss.  According to my understanding of Scripture, this has to happen before Jesus comes. 
 

Revelation 11:1-3(NKJV)

Then I was given a reed like a measuring rod. And the angel stood, saying, “Rise and measure the temple of God, the altar, and those who worship there. 

But leave out the court which is outside the temple, and do not measure it, for it has been given to the Gentiles. And they will tread the holy city underfoot for forty-two months. 

And I will give power to my two witnesses, and they will prophesy one thousand two hundred and sixty days, clothed in sackcloth.”

The two witnesses testifying in Jerusalem day after day for 3.5 years is gonna be hard to miss!