[HairOfTheDog]

Gandalf: "I am the servant of the secret fire, wielder of the flame of Anor. The dark fire will not avail you! Flame of Udun!"

From The Encyclopedia of Arda

I didn't really know there was that much uncertainty as to what was meant by that line...

I thought it referred to his Ring of Power, Narya, Ring of Fire...

Ring of Fire
Narya, the Red Ring

Timeline:

Dates:	Completed c. II 1590. Passed into the West with Gandalf 29 September III 3021
Origins:	Made by Celebrimbor and the Mírdain of Eregion
Other Names:	Narya, The Red Ring

Narya, the Red Ring; one of the Three Rings of the Elves that was originally granted to Círdan, but passed on by him to Gandalf.

Which is not to contradict the message of the article, that Gandalf certainly had power given by the Holy spirit, as an Istari, a spirit sent by Ilúvatar (The One) to Middle Earth to aid the Free Peoples of middle against the return and rise of Sauron.

[JenB]

I didn't really know there was that much uncertainty as to what was meant by that line...

I thought it referred to his Ring of Power, Narya, Ring of Fire

Well, but that wouldn't make him a servant of the secret fire. Wielder, yes, but not servant...