John 3:5

ἀπεκρίθη Ἰησοῦς· ἀμὴν ἀμὴν λέγω σοι, ἐὰν μή τις γεννηθῇ ἐξ ὕδατος καὶ πνεύματος, οὐ δύναται εἰσελθεῖν εἰς τὴν βασιλείαν τοῦ θεοῦ

Answered Jesus, truly truly I say to you, unless one is born of water and spirit, he is not able to enter the kingdom of God


 * ἀπεκρίθη - a passive form conveying a middle idea
 * ἐὰν μή τις - unless one... we will expect a subjunctive to follow
 * γεννηθῇ - aorist passive subjunctive 3P sg. be born.
 * ἐξ ὕδατος καὶ πνεύματος - note both are genitive.
 * οὐ δύναται - not able, expect an infinitive to complete the idea
 * εἰσελθεῖν - here's the infinitive. A compound word. εἰσ (into, spatially) and ελθεῖν from ἔρχομαι (to come, go)
 * εἰς - into. Not the doubling up of the idea as εἰς is also in the previous word. This is common to most European languages except for English.
 * τὴν βασιλείαν τοῦ θεοῦ - the kingdom of God.