We shouldn't deny the 'existence' of these problems. [=we shouldn't deny that these problems are present or real]
long before the country had 'come into existence' [=begun to exist; come to have actual being]
I owe my very 'existence' [='life'] to their courage. [=I am alive because of their courage]
(..) An entity from a time before the Kirin Tor existed. We think it serve the functions similar to that of the Guardian. No one beyond the arch council knows of it's existence, and it will stay that way. And you to mention it in the same breath as the dark portal is too much to be mere... (..)2016 Warcraft