Hi all, thanks for your replies!
For word order questions in (Attic) Greek, I find the combination of Dover 1960 plus the newer approach (most recently summarised in the Cambridge grammar of classical Greek) most helpful. Neither is sufficient on its own (for me).
Bill, I agree with everything in your post too—yes, it was just the clitic form ἐστι in second position that I was referring to in those examples with a genitive modifier in first position; agreed also that the other examples in the first five chapters don’t split noun + adjective, and so further investigation would be required. I haven’t checked elsewhere yet in Matthew (I’ll need to read him first! I’m way behind). Since other clitics in second position can split syntactically-related groups, I don’t see any intrinsic reason to doubt this, but only comprehensive reading of Matthew will tell.
I note in passing that one would also need to check Aeschines before determining whether the Aeschines 1.122–23 quote that Joel helpfully gives above, containing two copulas, follows the same pattern that I noted in Matthew: the first ἐστι fronted under the influence of the demonstrative pronoun, the second ἐστι in second position (with οὐκ ἀνδρός in first position in that word group):
αὕτη μέν ἐστιν, ὦ Τίμαρχε, ἀνδρὸς ἀγαθοῦ καὶ σώφρονος ἀπολογία, καὶ πεπιστευκότος τῷ βίῳ καὶ καταφρονοῦντος εἰκότως ἁπάσης βλασφημίας· ἃ δὲ πείθει σε Δημοσθένης, οὐκ ἀνδρός ἐστιν ἐλευθέρου, ἀλλὰ πόρνου περὶ τῶν τόπων διαφερομένου.
Each author can have their own individual approach to word order: the resources only give us a few general tools and patterns, to allow us to begin further investigation…
I wonder whether anyone has already studied the position of postpositives in Matthew? Any suggestions for the leading (and, if different, the latest) reference works for NT Greek would be highly appreciated, many thanks all!
Cheers, Chad