ヨハネはまだ投獄されていなかったからである。
Sentence Analyzer
English Translation
This was before John was put in prison.
Furigana
ヨハネはまだ投獄 されていなかったからである。
Romanji
Yohane wa mada tōgokusareteinakatta kara de aru.
Words
は
(は)
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
未だ
(まだ、いまだ)
as yet; hitherto; only; still; not yet (with negative verb); more; besides; unfinished; incomplete; not yet finished with
投獄
(とうごく)
imprisonment
から
(から)
from (e.g. time, place, numerical quantity); since; from (originator); by; because; since; out of (constituent, part); through (e.g. window, vestibule); after; since
だ
(だ)
be; is; indicates past or completed action; indicates light imperative
或
(ある)
a certain ...; some ...