ου relative pronoun - genitive singular masculine
hos  hos: the relatively (sometimes demonstrative) pronoun, who, which, what, that -- one, (an-, the) other, some, that, what, which, who(-m, -se), etc.
εστιν verb - present indicative - third person singular
esti  es-tee':  he (she or it) is; also (with neuter plural) they are
η definite article - nominative 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.
παρουσια noun - nominative singular feminine
parousia  par-oo-see'-ah: a being near, (by implication) physically, aspect -- coming, presence.
κατ preposition
kata  kat-ah': (prepositionally) down (in place or time), in varied relations
ενεργειαν noun - accusative singular feminine
energeia  en-erg'-i-ah: efficiency (energy) -- operation, strong, (effectual) working.
του definite article - genitive singular masculine
ho  ho: the definite article; the (sometimes to be supplied, at others omitted, in English idiom) -- the, this, that, one, he, she, it, etc.
σατανα noun - genitive singular masculine
Satanas  sat-an-as': the accuser, i.e. the devil -- Satan.
εν preposition
en  en: in, at, (up-)on, by, etc.
παση adjective - dative singular feminine
pas  pas: apparently a primary word; all, any, every, the whole
δυναμει noun - dative singular feminine
dunamis  doo'-nam-is: force; specially, miraculous power (usually by implication, a miracle itself)
και conjunction
kai  kahee: and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
σημειοις noun - dative plural neuter
semeion  say-mi'-on: an indication, especially ceremonially or supernaturally -- miracle, sign, token, wonder.
και conjunction
kai  kahee: and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
τερασιν noun - dative plural neuter
teras  ter'-as:  a prodigy or omen -- wonder.
ψευδους noun - genitive singular neuter
pseudos  psyoo'-dos: a falsehood -- lie, lying.