John 8:12

Πάλιν οὖν αὐτοῖς ἐλάλησεν ὁ Ἰησοῦς λέγων Ἐγώ εἰμι τὸ φῶς τοῦ κόσμου· ὁ ἀκολουθῶν μοι οὐ μὴ περιπατήσῃ ἐν τῇ σκοτίᾳ, ἀλλ’ ἕξει τὸ φῶς τῆς ζωῆς.
Rough Word-by-word:
again therefore to them he spoke the Jesus saying, "I I am the light of the world; the one who follows me not not he might walk in the darkness, but he will have the light of the life.

Smooth Translation:
Therefore Jesus again spoke to them saying, "I myself am the light of the world. The one who follows me might not ever walk in the darkness, but he will have the light of life.

Πάλιν adverb "again"

οὖν post positive conjunction "therefore"

αὐτοῖς pronoun dative plural masculine "to them"

ἐλάλησεν verb aorist active indicative 3rd singular from λαλέω (I speak) "he spoke"

ὁ definite article nominative singular masculine "the"

Ἰησοῦς proper noun nominative singular masculine "Jesus"

λέγων present active participle nominative singular masculine from λέγω (I say) "saying"

Ἐγώ pronoun 1st singular "I"

εἰμι verb present indicative 1st singular from εἰμί (I am) "I am"

τὸ definite article nominative singular neuter "the"

φῶς noun nominative singular neuter "light"

τοῦ definite article genitive singular masculine "[of] the"

κόσμου noun genitive singular masculine "world"

ὁ definite article nominative singular masculine "the"

ἀκολουθῶν present active participle nominative singular masculine from ἀκολουθέω (I follow) "one who follows"

μοι pronoun dative singular masculine "me"

οὐ adverb of negation "not"

μὴ adverb of negation "not" (Note: both adverbs together indicate a strong negation such as "not ever"

περιπατήσῃ verb aorist active subjunctive 3rd singular from περιπατέω (I walk) "he might walk"

ἐν dative preposition "in"

τῇ definite article dative singular feminine "the"

σκοτίᾳ noun dative singular feminine "darkness"

ἀλλ’ strong adversative conjunction "but"

ἕξει verb future active indicative 3rd singular from ἔχω (I have) "he will have"

τὸ definite article accusative singular neuter "the"

φῶς noun accusative singular neuter "light"

τῆς definite article genitive singular feminine "[of] the"

ζωῆς noun genitive singular feminine "life"