Titus 2.13 is included in the list of examples of hendiadys in BDF 442.16. Which καί they referring to, and are either of them a true hendiadys?
a) τὴν μακαρίαν ἐλπίδα καὶ ἐπιφάνειαν τῆς δόξης..
Some take the first καί to be epexegetical: awaiting the blessed hope, [that is,] the appearing of.. The hope then is objective, the thing hoped for, which is the appearing of the glory of..
I have seen this described as a hendiadys. But my impression was that in a true hendiadys the pair of terms joined by καί can normally be rendered either with a genitive - the hope of the appearing; or adjectivally - the hoped-for appearing. 'The hope of the appearing' is subjective hope, I think, as if we were waiting until we received the ability to hope. 'The hoped-for appearing' won't work here, I think, because it would have to be the blessed-hoped for appearing or somesuch.
Also, the word hendiadys seems to be used for a balanced pair of short terms, whereas here the epexegetical material carries on.
b) τοῦ μεγάλου θεοῦ καὶ σωτῆρος ἡμῶν Ἰησοῦ Χριστοῦ,
I know it is a matter of much discussion whether Ἰησοῦ Χριστοῦ is τοῦ μεγάλου θεοῦ here. If He is, then possibly this might be called a hendiadys since two terms are joined into one, but this is surely to do with the scope of the article, rather than anything else.
So I don't yet see how either can be a hendiadys in the normal sense. Thanks for your help,
P.S. Blass says [Thackeray, 1905 p.163]:
so if I am understanding correctly what he means by the two clauses in apposition, I think he is indeed reading the καί in an epexegetical way as 'that is,..'.The article appears to be dropped, not unnaturally, between two clauses in apposition connected by καὶ, in Titus 2.13 (τὴν) ἐπιφάνειαν τῆς δόξης τοῦ μεγάλου θεοῦ καὶ σωτῆρος ἡμῶν [Ἰησοῦ Χριστοῦ],