αληθειαν noun - accusative singular feminine
aletheia  al-ay'-thi-a: truth -- true, truly, truth, verity.
λεγω verb - present active indicative - first person singular
lego  leg'-o: ask, bid, boast, call, describe, give out, name, put forth, say(-ing, on), shew, speak, tell, utter.
εν preposition
en  en: in, at, (up-)on, by, etc.
χριστω noun - dative singular masculine
Christos  khris-tos': anointed, i.e. the Messiah, an epithet of Jesus -- Christ.
ου particle - nominative
ou  oo: no or not -- + long, nay, neither, never, no (man), none, (can-)not, + nothing, + special, un(-worthy), when, + without, + yet but.
ψευδομαι verb - present middle or passive deponent indicative - first person singular
pseudomai  psyoo'-dom-ahee: to utter an untruth or attempt to deceive by falsehood -- falsely, lie.
συμμαρτυρουσης verb - present active passive - genitive singular feminine
summartureo  soom-mar-too-reh'-o: to testify jointly, i.e. corroborate by (concurrent) evidence -- testify unto, (also) bear witness (with).
μοι personal pronoun - first person dative singular
moi  moy: to me -- I, me, mine, my.
της definite article - genitive singular feminine
ho  ho: the definite article; the (sometimes to be supplied, at others omitted, in English idiom) -- the, this, that, one, he, she, it, etc.
συνειδησεως noun - genitive singular feminine
suneidesis  soon-i'-day-sis: co-perception, i.e. moral consciousness -- conscience.
μου personal pronoun - first person genitive singular
mou  moo: of me -- I, me, mine (own), my.
εν preposition
en  en: in, at, (up-)on, by, etc.
πνευματι noun - dative singular neuter
pneuma  pnyoo'-mah: ghost, life, spirit(-ual, -ually), mind.
αγιω adjective - dative singular neuter
hagios  hag'-ee-os: sacred (physically, pure, morally blameless or religious, ceremonially, consecrated) -- (most) holy (one, thing), saint.