How?

It is strange, believing in something that is so hard to prove. We walk upon a path with the hope that this day will lead us to a salvation when our path finishes. We are taught literature and listen to songs which ask the question: how do we know?  

How do we? 

I can't help but think of a song by the Neighborhood simply titled How. In the song, the lyricist states: "How could you question God's existence when you question God himself? Why would you ask for God's assistance if you wouldn't take the help?" This is sings true to me. Yet it is much more than that. Where does one go after their path truly finishes? Is it that we do go to the salvation when we were good on earth, and damnation when we were bad,and purgatory because we forgot to pray every now and again? 

These are questions that truly do hunt my thoughts, as I stay awake late a night with a bad case of insomnia. They rest there in the back of my mind, to catch me off guard in a choke hold.