John 2:20

εἶπαν οὖν οἱ Ἰουδαῖοι· τεσσεράκοντα καὶ ἓξ ἔτεσιν οἰκοδομήθη ὁ ναὸς οὗτος, καὶ σὺ ἐν τρισὶν ἡμέραις ἐγερεῖς αὐτόν;

Rough Word-by-word:
They said therefore the Jews, "Forty and six years it was being built the temple this, and you in three days will raise up it?"

Smooth Translation:
Therefore the Jews said, "This temple was being built Forty six years, and you will raise it up in three days?"

εἶπαν verb aorist active indicative 3rd plural from λέγω (I say) "they said"

οὖν conjunction "therefore"

οἱ definite article nominative masculine plural "the"

Ἰουδαῖοι adjective nominative masculine plural "Jews"

τεσσεράκοντα numeral "forty"

καὶ conjunction "and"

ἓξ numeral "six"

ἔτεσιν noun dative neuter plural "years"

οἰκοδομήθη aorist passive indicative 3rd singular from οἰκοδομέω (I build) "he was being built"

ὁ definite article nominative masculine singular "the"

ναὸς noun nominative masculine singular "temple"

οὗτος demonstrative pronoun nominative masculine singular "this"

καὶ conjunction "and"

σὺ pronoun 2nd singular "you"

ἐν dative preposition "in"

τρισὶν adjective dative feminine plural "three"

ἡμέραις noun dative feminine plural "days"

ἐγερεῖς verb future active indicative 2nd singular from ἐγείρω (I raise up) "you will raise up"

αὐτόν pronoun accusative masculine singular "him"