“Now,
You will become mute!
You will be
Unable to speak
Until the day
That these things
Will happen!
You did not
Believe my words!
They will be fulfilled
In their due time!”
καὶ ἰδοὺ ἔσῃ σιωπῶν καὶ μὴ δυνάμενος λαλῆσαι ἄχρι ἧς ἡμέρας γένηται ταῦτα, ἀνθ’ ὧν οὐκ ἐπίστευσας τοῖς λόγοις μου, οἵτινες πληρωθήσονται εἰς τὸν καιρὸν αὐτῶν
Luke pointed out that Zechariah would receive a punishment, because he doubted that he and his wife would have a son, as in verse 18. Thus, the angel Gabriel told Zechariah that he would become silent or mute (καὶ ἰδοὺ ἔσῃ σιωπῶν). He would not be able to speak (καὶ μὴ δυνάμενος λαλῆσαι) until the day when all these things would happen (ἄχρι ἧς ἡμέρας γένηται ταῦτα). This was his punishment for not believing the words of the angel Gabriel (ἀνθ’ ὧν οὐκ ἐπίστευσας τοῖς λόγοις μου). He did not believe that they would come to pass or be fulfilled in the right or correct season or time (οἵτινες πληρωθήσονται εἰς τὸν καιρὸν αὐτῶν). He would be punished, but not with a permanent punishment or death penalty. Zechariah would be mute for a short period of time.
Eugene Finnegan Bible Project 