Christian
God-fearing man
abecedarian
accepter
alphabetarian
apprentice
articled clerk
baby
beginner
believer
boot
brother
church member
churchgoer
churchite
churchman
churchwoman
communicant
convert
daily communicant
deb
debutant
devotee
devotionalist
disciple
entrant
fanatic
fledgling
follower
freshman
good Christian
greenhorn
greeny
ignoramus
inductee
infant
initiate
laic
lay brother
lay sister
layman
laywoman
learner
neophyte
nestling
new boy
newcomer
novice
novitiate
educatee
pupil
student