All 3 Uses

narrator
in
Ben Hur
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"To prove how great and rich the men were," the narrator continued, "they sat under awnings of silk; the buckles of their saddles were of gold, as was the fringe of their bridles; the bells were of silver, and made real music.†
Chpt 1.13

narrator = storyteller
"It is said," the narrator continued, "that there is not a sound bone in the man's body.†
Chpt 4.1
What the story was the reader can arrive at with sufficient certainty when told that the narrator was one of the men who had held torches for the commandant of the Tower of Antonia when, down in cell VI.†
Chpt 6.5 *

Definitions:

(1) (narrator)
someone who tells a story--especially the main voice in a documentary, or a character who talks directly to the audience in a movie, play or other performance
(2) (meaning too rare to warrant focus)