βλεπετε verb - present active middle - second person
blepo  blep'-o: to look at -- behold, beware, lie, look (on, to), perceive, regard, see, sight, take heed.
αγρυπνειτε verb - present active middle - second person
agrupneo  ag-roop-neh'-o: to be sleepless, i.e. keep awake -- watch.
και conjunction
kai  kahee: and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
προσευχεσθε verb - present middle or passive deponent imperative - second person
proseuchomai  pros-yoo'-khom-ahee: to pray to God, i.e. supplicate, worship -- pray (earnestly, for), make prayer.
ουκ particle - nominative
ou  oo: no or not -- + long, nay, neither, never, no (man), none, (can-)not, + nothing, + special, un(-worthy), when, + without, + yet but.
οιδατε verb - perfect active indicative - second person
eido  i'-do: to see; by implication, (in the perfect tense only) to know
γαρ conjunction
gar  gar: assigning a reason (used in argument, explanation or intensification; often with other particles)
ποτε particle - interrogative
pote  pot'-eh: interrogative adverb, at what time -- + how long, when.
ο definite article - nominative 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.
καιρος noun - nominative singular masculine
kairos  kahee-ros': an occasion, i.e. set or proper time -- always, opportunity, (convenient, due) season, (due, short, while) time, a while.
εστιν verb - present indicative - third person singular
esti  es-tee':  he (she or it) is; also (with neuter plural) they are