John 3:3

ἀπεκρίθη Ἰησοῦς καὶ εἶπεν αὐτῷ· ἀμὴν ἀμὴν λέγω σοι, ἐὰν μή τις γεννηθῇ ἄνωθεν, οὐ δύναται ἰδεῖν τὴν βασιλείαν τοῦ θεοῦ

Answered Jesus and he said to him, truly truly I say to you, unless someone be born again, he cannot see the kingdom of God


 * ἀπεκρίθη - aorist passive indicative 3P sg. In this case, refers to Jesus. It's a passive form conveying a middle idea.
 * ἐὰν μή τις γεννηθῇ - ἐὰν μή (unless) typically followed by a subjunctive (happens in English too, very subtly). In this case γεννηθῇ (be born).
 * ἄνωθεν - can be rendered again or as the NET puts it from above (with again as option in footnote). Adverb of place or time? Is there a wordplay going on? Jesus is saying a man must be spiritually born, i.e. from above, but Nicodemus perceives it in a temporal manner - again? This is going to be a persistent pattern in John - Jesus speaks but people hear him different.
 * οὐ δύναται ἰδεῖν - οὐ δύναται (not able to, like dynamo, not powerful to--remember Eternal Father Strong to Save?) Needs a complementary infinitive so ἰδεῖν (from ἴδε, see!)