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.
δε conjunction
de  deh: but, and, etc. -- also, and, but, moreover, now (often unexpressed in English).
πετρος noun - nominative singular masculine
Petros  pet'-ros: as a name, Petrus, an apostle -- Peter, rock.
εφη verb - imperfect indicative - third person singular
phemi  fay-mee': to show or make known one's thoughts, i.e. speak or say -- affirm, say.
αυτω personal pronoun - dative singular masculine
autos  ow-tos': the reflexive pronoun self, used of the third person , and (with the proper personal pronoun) of the other persons
και conjunction
kai  kahee: and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
ει conditional
ei  i: if, whether, that, etc. -- forasmuch as, if, that, (al-)though, whether.
παντες adjective - nominative plural masculine
pas  pas: apparently a primary word; all, any, every, the whole
σκανδαλισθησονται verb - future passive indicative - third person
skandalizo  skan-dal-id'-zo: to entrap, i.e. trip up (figuratively, stumble (transitively) or entice to sin, apostasy or displeasure) -- (make to) offend.
αλλ conjunction
alla  al-lah': other things, i.e. (adverbially) contrariwise (in many relations) -- and, but (even), howbeit, indeed, nay, nevertheless, no, notwithstanding, save, therefore, yea, yet.
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.
εγω personal pronoun - first person nominative singular
ego  eg-o': I, me.