καὶ εἶδον τὴν γυναῖκα μεθύουσαν ἐκ τοῦ αἵματος τῶν ἁγίων καὶ ἐκ τοῦ αἵματος τῶν μαρτύρων Ἰησοῦ. Καὶ ἐθαύμασα ἰδὼν αὐτὴν θαῦμα μέγα· (Revelation 17:6)
καὶ εἶπέν μοι ὁ ἄγγελος Διὰ τί ἐθαύμασας; ἐγὼ ἐρῶ σοι τὸ μυστήριον τῆς γυναικὸς καὶ τοῦ θηρίου τοῦ βαστάζοντος αὐτήν, τοῦ ἔχοντος τὰς ἑπτὰ κεφαλὰς καὶ τὰ δέκα κέρατα· (17:7)
τὸ θηρίον ὃ εἶδες ἦν καὶ οὐκ ἔστιν, καὶ μέλλει ἀναβαίνειν ἐκ τῆς ἀβύσσου, καὶ εἰς ἀπώλειαν ὑπάγει· καὶ θαυμασθήσονται οἱ κατοικοῦντες ἐπὶ τῆς γῆς, ὧν οὐ γέγραπται τὸ ὄνομα ἐπὶ τὸ βιβλίον τῆς ζωῆς ἀπὸ καταβολῆς κόσμου, βλεπόντων τὸ θηρίον ὅτι ἦν καὶ οὐκ ἔστιν καὶ πάρεσται. (17:8)
In the aforementioned verses, I want to emphasize the astonishment/wonder aspect. Why did John use this kind of language? Is it typical of GNT writers? These are questions I would like to explore since the verb θαυμάζω has such an interesting history in secular Greek. For a book like Revelation, the verbs "wonder" or "marvel" are appropriate.