υμεις personal pronoun - second person nominative plural
humeis  hoo-mice': you (as subjective of verb) -- ye (yourselves), you.
απεσταλκατε verb - perfect active indicative - second person
apostello  ap-os-tel'-lo: set apart, i.e. (by implication) to send out (properly, on a mission) literally or figuratively -- put in, send (away, forth, out), set (at liberty).
προς preposition
pros  pros: a preposition of direction; forward to, i.e. toward
ιωαννην noun - accusative singular masculine
Ioannes  ee-o-an'-nace: Joannes (i.e. Jochanan), the name of four Israelites -- John.
και conjunction
kai  kahee: and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
μεμαρτυρηκεν verb - perfect active indicative - third person singular
martureo  mar-too-reh'-o: to be a witness, i.e. testify
τη definite article - dative 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.
αληθεια noun - dative singular feminine
aletheia  al-ay'-thi-a: truth -- true, truly, truth, verity.