αγωνιζεσθε verb - present middle or passive deponent imperative - second person
agonizomai  ag-o-nid'-zom-ahee: to struggle, literally (to compete for a prize), figuratively (to contend with an adversary), or genitive case (to endeavor to accomplish something) -- fight, labor fervently, strive.
εισελθειν verb - second aorist active middle or passive deponent
eiserchomai  ice-er'-khom-ahee: to enter -- arise, come (in, into), enter in(-to), go in (through).
δια preposition
dia  dee-ah': through (in very wide applications, local, causal, or occasional)
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.
στενης adjective - genitive singular feminine
stenos  sten-os':  narrow (from obstacles standing close about) -- strait.
πυλης noun - genitive singular feminine
pule  poo'-lay: a gate, i.e. the leaf or wing of a folding entrance -- gate.
οτι conjunction
hoti  hot'-ee: demonstrative, that (sometimes redundant); causative, because -- as concerning that, as though, because (that), for (that), how (that), (in) that, though, why.
πολλοι adjective - nominative plural masculine
polus  pol-oos': abundant, altogether, common, far (passed, spent), (be of a) great (age, deal, -ly, while), long, many, much, oft(-en (-times), plenteous, sore, straitly.
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.
υμιν personal pronoun - second person dative plural
humin  hoo-min': to (with or by) you -- ye, you, your(-selves).
ζητησουσιν verb - future active indicative - third person
zeteo  dzay-teh'-o: to seek; specially, (by Hebraism) to worship (God), or (in a bad sense) to plot (against life)
εισελθειν verb - second aorist active middle or passive deponent
eiserchomai  ice-er'-khom-ahee: to enter -- arise, come (in, into), enter in(-to), go in (through).
και conjunction
kai  kahee: and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
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.
ισχυσουσιν verb - future active indicative - third person
ischuo  is-khoo'-o: to have (or exercise) force -- be able, avail, can do(-not), could, be good, might, prevail, be of strength, be whole, + much work.