At the end of Percy Jackson and the Last Olympian Rachel became the new Oracle and made the new great prophecy

"Seven Half- Bloods Shall Answer the Call"
"To Storm or to Fire the World Must Fall"
"An Oath to Keep With a Final Breath"
"And Foes Bear Arms to the Doors of Death"

Now there has been a lot of great ideas for this prophecy and I'm just going to put them here or at least as much as I can remember.

Ok the first line "Seven Half-Bloods Shall Answer the Call" ok the call could mean Pan but thats all over ever since the battle of the Labryinth so it could mean Grover seening as he's a member...