How Do We Know For Sure?

How do we know for sure?
Is there Heaven?
Is there Hell?
Is there even an afterlife? Or do we just rot six feet under?

How do we know for sure?
Is there God?
Is there Satan?
Do we become spirits, and haunt the ones who've done us wrong?

How do we know for sure?
Is there sin?
Should we repent?
Or does it not even matter? Our actions are pointless.

How do we know for sure?
How do we know at all?

So, maybe we should enjoy what life we have?
Maybe we should stop giving a shit what people think and live?!
Maybe we should take risks we wouldn't?
Maybe we should tell the one we love, we love them before it's too late?

Maybe we should stop being ignorant and naive for five minutes and live!?
Maybe we should rethink what we've done and fix it!?
Because, how do we know for sure?
Is there even an afterlife? Or do we just rot six feet under?