I like how C.S. Lewis put it in the Chronicles of Narnia:

"Ooh!" said Susan. "I'd thought he was a man. Is he -- quite safe? I shall feel rather nervous about meeting a lion."

"That you will, dearie, and no mistake," said Mrs. Beaver, "if there's anyone who can appear before Aslan without their knees knocking, they're either braver than most or else just silly."

"Then he isn't safe?" said Lucy.

"Safe?" said Mr. Beaver. "Don't you hear what Mrs. Beaver tells you? Who said anything about safe? 'Course he isn't safe. But he's good. He's the King, I tell you."

"I'm longing to see him," said Peter, "even if I do feel frightened when it comes to the point."