Abraham and Isaac - A Mitchell and Webb retelling

As a follow up to the earlier post on Abraham a friend sent me this link of a classic Mitchell and Webb take on the story of Isaac.  It makes you think that Kierkegaard was really onto something in "Fear and Trembling" when he said that this story should make us very fearful.

Wouldn't the appropriate response here be defiance? Why wouldn't Abraham think himself insane or that he was simply hearing the devil instead?

The three monotheistic faiths have this story at the heart of their tradition - Abraham is not condemned for agreeing to this - he is the example of the faith.