Here in the United States we have a saying when discussing doing something that needs to be done, but which will be extremely difficult and dangerous. We say "Who'll bell the cat?" referring to the old story of mice that decided they would be much safer if they put a bell on the collar of the marauding cat that threatened them, to warn them of its approach. Although all the mice thought it was a great idea, the problem was, of course, "Who'll bell the cat?"
The story of the Ananias is the story of a man of faith to whom God gave the equivalent job of "belling" a lion or other big cat – or, perhaps more accurately, of freeing a potentially very dangerous restrained lion. You can read the story and come to know more about Ananias in the article "'Brother Saul' And the Faith of Ananias" uploaded to the Faith Hall of Fame section of our site today.