Scorsese publicly confesses he doesn't go to mass each week.  According to the theology of the RCC,
unless a valid reason, he  commits repeated mortal sins, (if one mortal sin separates one from god what is the point of multiple mortal sins?  The deed is done.) and not confessed before he dies, destined for an eternity in hell!  
He seems to describe himself as a cultural Catholic, much as many Jews would describe themselves as cultural Jews.  Hard to shake such off when especially indoctrinated at a v. early uncritical age of life.
Does S. believe in an anthropomorphic god? 
I read The Silence years ago but forgotten it.  Look forward to MS' work.