πιστος adjective - nominative singular masculine
pistos  pis-tos': objectively, trustworthy; subjectively, trustful -- believe(-ing, -r), faithful(-ly), sure, true.
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.
καλων verb - present active passive - nominative singular masculine
kaleo  kal-eh'-o: to call (properly, aloud, but used in a variety of applications, directly or otherwise) -- bid, call (forth), (whose, whose sur-)name (was (called).
υμας personal pronoun - second person accusative plural
humas  hoo-mas': you (as the objective of a verb or preposition) -- ye, you (+ -ward), your (+ own).
ος relative pronoun - nominative 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.
και conjunction
kai  kahee: and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
ποιησει verb - future active indicative - third person singular
poieo  poy-eh'-o: to make or do (in a very wide application, more or less direct)