> 
> Revelation 7:14  
>  I answered, "Sir, you know." And he said, "These
>  are they who have come out of **the great tribulation**; they have washed
>  their robes and made them white in the blood of the Lamb.
> 
> 
> 

If I don't connect it to other verses, it seems to me that the great tribulation in Rev 7:14 is a "global" era on earth history which has not happened yet in the past. For example, the Old Testament's people were not experiencing the great tribulation era.

But from an answer from my other question [here](https://hermeneutics.stackexchange.com/questions/30889/what-and-where-are-the-springs-of-living-water-in-revelation-79-17/30891?noredirect=1#comment59325_30891) where the answer is connecting with this verse :

> 
> Isaiah 49:10   
>  He who has compassion on them will guide **them** and
>  lead them beside springs of water.
> 
> 
> 

it seems to me the "them" from the above verse is anyone who ever live on earth. This leads me to think that [the great tribulation] in Rev 7:14 is a history on individual. For example, The Old Testament Saints (Prophets) experience their own "great tribulation".

But above is my own thinking as a Non-Christian :).

So, back to the question :  

What is "the great tribulation" in Revelation 7:14 ?

Thank you.