This is the term for people in Belarus who use prayers to heal.  See the link above to the BBC audio broadcast that goes into greater detail about who they are.  P.S. Unlike the religious man who calls them witches, they are not.  

Who gives them their power?

As you will learn from the BBC news broadcast these people give credit to God for giving them this power.  

Healing when others can't help

Another feature you will learn from the broadcast is these Whisperers heal when doctors cannot.  How?  listen and find out.