the Lost Symbol: Believe or Trust

Am half-way through Dan Brown's The Lost Symbol. Would have read it through last night but needed the sleep. Here's a thought from one of the characters to the hero, Langdon. He relates that one of Langdon's greatest strengths is his skepticism and at the same time it is one of his greatest weaknesses. And then he says:

"I know you well enough to know you're not a man I can ask to believe . . . only to trust."

There is a difference isn't there. I wish it would be the practice of those speaking and writing about our religion if they would emphasise trust more as opposed to belief.