When Elisha revives the son of the Shunamite woman, he first instructs his servant to place his staff on the boy's mouth. The next posuk says "...and there was no sound nor any attention; and [Gehazi] returned toward him and told him saying, "The lad has not awakened..."
Did Elisha think placing the staff on the boy's face would revive him? What did Elisha think would happen? Was placing the staff some sort of diagnostic test?
A possible clue: Gehazi has time to go to the boy's house and return to Elisha before Elisha gets there. Did Elisha begin travelling before he received the report or did he only leave when he received the report? I was thinking that perhaps Elisha knew the staff wouldn't do anything but he had it placed to either a) Make some kind of placebo to calm down the parents or b) "claim" the patient so voodoo faith healers wouldn't attempt to perform quack medicine before Elisha could spiritually heal the boy.