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]
(..) The fact is, maybe he's not some sort of devil or Jesus character. Maybe he’s just a guy trying to do the right thing. We’re talking about a being whose very existence challenges our own sense of priority in the universe. If you go back to Copernicus, where he restored the sun and the center of the (..)2016 Batman v Superman: Dawn of Justice