εγενετο verb - second aorist middle deponent indicative - third person singular
ginomai  ghin'-om-ahee: to cause to be (gen-erate), i.e. (reflexively) to become (come into being), used with great latitude (literal, figurative, intensive, etc.)
ιωαννης noun - nominative singular masculine
Ioannes  ee-o-an'-nace: Joannes (i.e. Jochanan), the name of four Israelites -- John.
βαπτιζων verb - present active passive - nominative singular masculine
baptizo  bap-tid'-zo: to immerse, submerge; to make whelmed (i.e. fully wet); used only (in the New Testament) of ceremonial ablution
εν preposition
en  en: in, at, (up-)on, by, etc.
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.
ερημω adjective - dative singular feminine
eremos  er'-ay-mos: lonesome, i.e. (by implication) waste -- desert, desolate, solitary, wilderness.
και conjunction
kai  kahee: and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
κηρυσσων verb - present active passive - nominative singular masculine
kerusso  kay-roos'-so: to herald (as a public crier), especially divine truth (the gospel) -- preacher(-er), proclaim, publish.
βαπτισμα noun - accusative singular neuter
baptisma  bap'-tis-mah:  baptism (technically or figuratively) -- baptism.
μετανοιας noun - genitive singular feminine
metanoia  met-an'-oy-ah: (subjectively) compunction (for guilt, including reformation); by implication, reversal (of (another's) decision) -- repentance.
εις preposition
eis  ice: to or into (indicating the point reached or entered), of place, time, or (figuratively) purpose (result, etc.); also in adverbial phrases
αφεσιν noun - accusative singular feminine
aphesis  af'-es-is: freedom; (figuratively) pardon -- deliverance, forgiveness, liberty, remission.
αμαρτιων noun - genitive plural feminine
hamartia  ham-ar-tee'-ah: a sin (properly abstract) -- offence, sin(-ful).