I’ve heard a few say that all that is hidden will be revealed. 
Sounds good, doesn’t it? Especially when we are referring to political corruption.
I would love it!!

It’s a Bible quote. 1 Corinthians 4:5
I don’t think it is the promise they hope.
Let’s read it. 

See those words: Before the Lord returns? 
This text sounds to me like we are only promised full disclosure when all is said and done and we have vacated the planet – perhaps at the time of the Judgment Seat of Christ and the Great White Throne Judgment. 
I think some evils and their doers just might be hidden a little longer than we think. Or not. Time will tell. 

After all, it’s been 57 years since the assassination of JFK and we still don’t know for CERTAIN who killed him.  BUT GOD does and He keeps perfect records. 
We can rest easy, all will be revealed in His time.

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