νεύσατε with acc. of the boon, as Hom. Hymn. 5.445, Eur. Alc. 978 “Ζεὺς ὅ τι νεύσῃ” (more oft. “ἐπι-” or “κατανεύειν”). τὰν ἀδόκητον χάριν, the unlooked-for grace, i.e. for which, after your stern words (226), we can scarcely dare to hope,—but which, for that very reason, will be the more gracious.
.“καὶ τὰ δοκηθέντ᾽ οὐκ ἐτελέσθη,
τῶν δ᾽ ἀδοκήτων πόρον εὗρε θεός
”