John 7:27

ἀλλὰ τοῦτον οἴδαμεν πόθεν ἐστίν· ὁ δὲ χριστὸς ὅταν ἔρχηται οὐδεὶς γινώσκει πόθεν ἐστίν.

Rough Word-by-word:But this man we know from where he is, and Christ when he comes no one he knows from where he is.

Smooth Translation:But we know where this man is from, and when Christ comes no one knows where he is from.

ἀλλὰ strong adversative conjunction "but"

τοῦτον demonstrative pronoun accusative singular masculine "this man"

οἴδαμεν verb perfect active indicative 1st plural from εἴδω (I know) "we know" (translated like a present)

πόθεν adverb "from where"

ἐστίν verb present indicative 3rd singular from εἰμί (I am) "he is"

ὁ definite article nominative singular masculine "the"

δὲ post positive conjunction "and"

χριστὸς noun nominative singular masculine "Christ"

ὅταν adverb "when"

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

οὐδεὶς adjective nominative singular masculine "no one"

γινώσκει verb present active indicative 3rd singular from γινώσκω (I know) "he will know"

πόθεν adverb "from where"

ἐστίν verb present indicative 3rd singular from εἰμί (I am) "he is"