Hooded Man #2 : Have we started the fire? Bane : Yes. The fire rises.

Why does Bane say the fire rises?

“The fire rises.”

This quote foreshadows what's to come for Gotham. It's a sort of harbinger of doom statement that establishes the central theme of rising from the ashes. However, there will be casualties along the way — as Bane says, “They expect one of us in the wreckage brother.”

What is the fire Bane?

The Fire can be considered to be an allegory for the fire within a man's head, which when risen turns him to a hothead; if this is to be believed, Bane's intention is to spread hotheadedness. The Fire could also be a metaphor for Bane's Master Plan, the success of which could be likened to a spreading, rising fire.