All 3 Uses of

disciple
in
Frankenstein - 1831 version

I took their word for all that they averred, and I became their disciple.
p. 41.9 *

disciple = someone who passionately believes in the teachings of another

I little expected, in this enlightened and scientific age, to find a disciple of Albertus Magnus and Paracelsus.
p. 47.6

"I am happy," said M. Waldman, "to have gained a disciple; and if your application equals your ability, I have no doubt of your success."
p. 50.5

disciple = someone who believes and helps to spread the teachings of another

Definition:

someone who believes and helps to spread the teachings of another

"Disciples" is sometimes used as a proper noun (capitalized) to reference the twelve disciples of Jesus.