The priesthood of all believers. What happened to that idea?

Talking about spiritual attainment is hard because we lack a proper of definition of the word "spiritual".

Nowadays a lot of practices are put under the umbrella of spirituality ranging from self deprivation to taking drugs.

However in this short post we should hope to clear the word "attainment".

As human beings and we are always operating on faith since we never know what the future has in store for us.
 
When we pressed the elevator button we wait because we have faith it will come. Based on this statement we should make a distinction between three kinds of faith: below reason, within reason and above reason.
 
The usual connotation of the word refers to the first kind of faith: below reason, meaning that we’ve been told something and we believe it without verifying it. This is the religious approach to faith.
 

I have been pondering this lately: How much of what we call conscience, or our "moral compass" is learned? How much is hereditary or even genetic? How much is spiritual?