Boanerges
allegorist
annotator
author
book reviewer
chalk talker
cicerone
clarifier
commentator
commenter
critic
cryptanalyst
cryptographer
cryptologist
decoder
definer
demonstrator
demythologizer
descanter
diaskeuast
discourser
disquisitor
dragoman
editor
editorial writer
editorialist
emendator
emender
essayist
euhemerist
exegesist
exegete
exegetist
explainer
explicator
exponent
expounder
glossarist
glossographer
go-between
guide
hermeneut
homilist
interpreter
leader writer
lecturer
lexicographer
metaphrast
intellect
intellectual
annalist
caricaturist
instrumantmarket
microscopist
reasoner
revivalist
ulema