John 3:8

τὸ πνεῦμα ὅπου θέλει πνεῖ, καὶ τὴν φωνὴν αὐτοῦ ἀκούεις, ἀλλ' οὐκ οἶδας πόθεν ἔρχεται καὶ ποῦ ὑπάγει· οὕτως ἐστὶν πᾶς ὁ γεγεννημένος ἐκ τοῦ πνεύματος.

Rough Word-by-word:
The spirit where it wills it blows, and the sound of it you hear, but not you know from where it comes and where it leads under; as this is every the one having been born from the spirit.

Smooth Translation:
The spirit blows where it wills, and you hear the sound of it, but you do not know from where it comes and where it goes away; like this is every one having been born from the spirit.

τὸ definite article nominative neuter singular "the"

πνεῦμα noun nominative neuter singular "spirit"

ὅπου adverb "where"

θέλει verb present active indicative 3rd singular from θέλω (I wish/I will) "it wills"

πνεῖ verb present active indicative 3rd singular from πνέω (I blow) "it blows"

καὶ conjunction "and"

τὴν definite article accusative feminine singular "the"

φωνὴν noun accusative feminine singular "sound"

αὐτοῦ pronoun genitive neuter singular "of it"

ἀκούεις verb present active indicative 2nd singular from ἀκούω (I hear) "you hear"

ἀλλ' strong adversative conjunction "but"

οὐκ negative conjunction "not"

οἶδας verb perfect active indicative 2nd singular from εἴδω (I know) "you know"

πόθεν adverb "from where"

ἔρχεται verb present middle deponent indicative 3rd singular from ἔρχομαι (I come) "it comes"

καὶ conjunction "and"

ποῦ adverb "where"

ὑπάγει verb present active indicative 3rd singular from ὑπάγω (I lead under) "it leads under" (somewhat idiomatic meaning "it goes away")

οὕτως compound conjunction "as this"

ἐστὶν verb present indicative 3rd singular from εἰμί (I am) "it is"

πᾶς adjective nominative masculine singular "all/every"

ὁ definite article nominative masculine singular "the"

γεγεννημένος perfect passive participle nominative masculine singular from γεννάω (I am born) "one having been born"

ἐκ genitive preposition "from/out of"

τοῦ definite article genitive neuter singular "the"

πνεύματος noun genitive neuter singular "spirit"