prophecy question

[tuck668]

No: HPFGUIDX 67718

I am a new member and have been fanatically reading as many posts as 
I can, and I have also tried to search for this topic so I apologize 
profusely if this topic has already been discussed. If it has, could 
someone please point me in the direction of finding those posts? One 
big question that I couldn't figure out after reading and rereading 
OOP is as follows: If the Order (or at least Dumbledore) knew that 
only Harry or Voldemort could lift the prophecy from the shelf in 
the Dept. of Mysteries, why didn't they take Harry down there, have 
him take the prophecy off the shelf, and destroy it? If Voldemort 
could get into the Dept. of Mysteries, couldn't Dumbledore? Maybe 
I'm being completely illogical in thinking this, but, oh I don't 
know.. any thoughts?