It seems that every example I post is dismissed as being something other than this 'f-word'.
While The Hobbit - An Unexpected Journey is a bit too new to have the appropriate clips on YouTube - the referenced scene can easily be found.
There is a scene in the movie wherein the protagonists must fight their way through an almost hell-like environment while being pursued by greater numbers.
The heroes run, fight, fall and eventually escape in the nick of time.
The heroes kept moving forward even though there was no visible expectation for their success.
If this scene were used as a metaphor for 'faith' - would these be considered to be exhibiting the dreaded 'f'-word'?