Percy Jackson, 2nd Prophecy "To storm or fire, the world must fall" Heroes

[ANONYMOUS]

of Olympus? Okay so as for the deciphering of the 2nd prophecy:

Seven half-bloods shall answer the call
To storm or fire, the world must fall
An oath to keep with a final breath,
And foes bear arms to the Doors of Death

FIRST LINE: We will assume that it will be Piper (Greek), Leo (Greek), Percy (Greek), Jason (Roman), Hazel (Roman), Frank (Roman) and another demigod we are unsure of

Second line: I have a theory, it could possibly mean that to Jason (storm) or Fire (Leo) Gaea must fall. I believe this because storm and fire could be referring to Jason and Leo's powers and Gaea is the greek personification of the earth A.K.A the world... just a thought

Third line: This one, I'm not entierly sure of so I'm open to any ideas

Fourth: Foes could mean how the greeks and the romans have been long time enemy's and we already know what the doors of Death are

Anyway, my question is, what are your guy's thoughts on this? How did you guys interpret the prophecy?

 

[Brahian]

The seventh half-blood will be Annabeth, as mentioned in the last part of the first book. Also, the third line probably means someone is going to fulfil a promise as they're dying (that's my guess, anyway), and on the fourth line, I actually think means the foes (like, the enemies that they're going to have to work together against) actually bear arms at the Doors of Death