The orcs stood still, and a dead silence fell. 'I am a servant of the Secret Fire, wielder of the flame of Anor. You cannot pass. The dark fire will not avail you, flame of Udûn. Go back to the ...

When Gandalf says, "I am a servant of the Secret Fire, wielder of the Flame of Anor," he mentions his role as a Maia who serves Eru. The Secret Fire, also known as the Flame Imperishable ...