αρα particle
ara  ar'-ah:  a particle denoting an inference more or less decisive (as follows)
και conjunction
kai  kahee: and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
οι definite article - nominative plural 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.
κοιμηθεντες verb - aorist passive participle - nominative plural masculine
koimao  koy-mah'-o: to put to sleep, i.e. (passively or reflexively) to slumber; figuratively, to decease -- (be a-, fall a-, fall on) sleep, be dead.
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.
απωλοντο verb - second aorist middle indicative - third person
apollumi  ap-ol'-loo-mee: to destroy fully (reflexively, to perish, or lose), literally or figuratively -- destroy, die, lose, mar, perish.