John 3:17

οὐ γὰρ ἀπέστειλεν ὁ θεὸς τὸν υἱὸν εἰς τὸν κόσμον ἵνα κρίνῃ τὸν κόσμον, ἀλ ἵνα σωθῇ ὁ κόσμος δἰ αὐτοῦ

For God did not send his son into the word in order to judge the world, but so that the world might be saved through him.


 * post-positive γὰρ
 * ἀπέστειλεν - aorist active indicative 3P sg. Recognise from ἀποστέλλω. Quite a regular formation. έ is the lenghtened vowel augment after the prepositional prefix. One λ is dropped, quite common, then vowels ει lengthen to compensate. Recognisable εν ending
 * ἵνα κρίνῃ - subjunctive after ἵνα.
 * ἵνα σωθῇ - another subjuntive after ἵνα, this one is passive.