OET interlinear REV 21:2

uW Translation Notes:

Note 1 topic: figures-of-speech / activepassive

ἡτοιμασμένην ὡς νύμφην, κεκοσμημένην τῷ ἀνδρὶ αὐτῆς

˓having_been˒_prepared as ˓a˒_bride ˓having_been˒_adorned ˱for˲_the (Some words not found in SR-GNT: Καί τήν πόλιν τήν ἁγίαν Ἰερουσαλήμ καινήν εἶδον καταβαίνουσαν ἐκ τοῦ οὐρανοῦ ἀπό τοῦ Θεοῦ ἡτοιμασμένην ὡς νύμφην κεκοσμημένην τῷ ἀνδρί αὐτῆς)

If your language does not use these passive forms, you could express the ideas in active form or in another way that is natural in your language. If you need to say who did the action, the context suggests that it was God. It may be helpful to begin a new sentence here. Alternate translation: [God had prepared the city the way a bride adorns herself for her husband]

Note 2 topic: figures-of-speech / simile

ἡτοιμασμένην ὡς νύμφην, κεκοσμημένην τῷ ἀνδρὶ αὐτῆς

˓having_been˒_prepared as ˓a˒_bride ˓having_been˒_adorned ˱for˲_the (Some words not found in SR-GNT: Καί τήν πόλιν τήν ἁγίαν Ἰερουσαλήμ καινήν εἶδον καταβαίνουσαν ἐκ τοῦ οὐρανοῦ ἀπό τοῦ Θεοῦ ἡτοιμασμένην ὡς νύμφην κεκοσμημένην τῷ ἀνδρί αὐτῆς)

The point of this comparison is that the city looked beautiful, just as a bride makes herself beautiful to please her husband on their wedding day. If it would be helpful in your language, you could make this point explicitly. It may be helpful to begin a new sentence here. Alternate translation: [God had made the city beautiful, just as a bride makes herself beautiful for her husband on their wedding day]