The coming King

καθὼς γέγραπται ἐν τῷ Ἠσαΐᾳ τῷ προφήτῃ ἰδοὺ ἀποστέλλω τὸν ἄγγελόν μου πρὸ προσώπου σου ὃς κατασκευάσει τὴν ὁδόν σου φωνὴ βοῶντος ἐν τῇ ἐρήμῳ ἑτοιμάσατε τὴν ὁδὸν κυρίου εὐθείας ποιεῖτε τὰς τρίβους αὐτοῦ
As it is written in the prophet Isaiah,
‘See, I am sending my messenger ahead of you, who will prepare your way, the voice of one crying out in the wilderness: “Prepare the way of the Lord, make his paths straight” ’
(Mark 1:2)

ἰδοὺ ἐγὼ ἐξαποστέλλω τὸν ἄγγελόν μου καὶ ἐπιβλέψεται ὁδὸν πρὸ προσώπου μου καὶ ἐξαίφνης ἥξει εἰς τὸν ναὸν ἑαυτοῦ κύριος ὃν ὑμεῖς ζητεῖτε καὶ ὁ ἄγγελος τῆς διαθήκης ὃν ὑμεῖς θέλετε ἰδοὺ ἔρχεται λέγει κύριος παντοκράτωρ καὶ τίς ὑπομενεῖ ἡμέραν εἰσόδου αὐτοῦ ἢ τίς ὑποστήσεται ἐν τῇ ὀπτασίᾳ αὐτοῦ διότι αὐτὸς εἰσπορεύεται ὡς πῦρ χωνευτηρίου καὶ ὡς πόα πλυνόντων καὶ καθιεῖται χωνεύων καὶ καθαρίζων ὡς τὸ ἀργύριον καὶ ὡς τὸ χρυσίον καὶ καθαρίσει τοὺς υἱοὺς Λευι καὶ χεεῖ αὐτοὺς ὡς τὸ χρυσίον καὶ ὡς τὸ ἀργύριον καὶ ἔσονται τῷ κυρίῳ προσάγοντες θυσίαν ἐν δικαιοσύνῃ
See, I am sending my messenger to prepare the way before me, and the Lord whom you seek will suddenly come to his temple. The messenger of the covenant in whom you delight – indeed, he is coming, says the LORD of hosts. But who can endure the day of his coming, and who can stand when he appears? For he is like a refiner’s fire and like fullers’ soap; he will sit as a refiner and purifier of silver, and he will purify the descendants of Levi and refine them like gold and silver, until they present offerings to the LORD in righteousness.
(Malachi 3:1-3)

φωνὴ βοῶντος ἐν τῇ ἐρήμῳ ἑτοιμάσατε τὴν ὁδὸν κυρίου εὐθείας ποιεῖτε τὰς τρίβους τοῦ θεοῦ ἡμῶν πᾶσα φάραγξ πληρωθήσεται καὶ πᾶν ὄρος καὶ βουνὸς ταπεινωθήσεται καὶ ἔσται πάντα τὰ σκολιὰ εἰς εὐθεῖαν καὶ ἡ τραχεῖα εἰς πεδία καὶ ὀφθήσεται ἡ δόξα κυρίου καὶ ὄψεται πᾶσα σὰρξ τὸ σωτήριον τοῦ θεοῦ ὅτι κύριος ἐλάλησεν
A voice cries out: ‘In the wilderness prepare the way of the LORD, make straight in the desert a highway for our God. Every valley shall be lifted up, and every mountain and hill be made low; the uneven ground shall become level, and the rough places a plain. Then the glory of the LORD shall be revealed, and all people shall see it together, for the mouth of the LORD has spoken.’
(Isaiah 40:3-5)

Malachi pictures an approaching potentate whose retinue precedes and announces him – the LORD of hosts coming to re-establish the covenant, to sit in the temple, to purify the people. Isaiah speaks of the return of the LORD to a broken people, and of the vast efforts to be expended on making ready for him, preparing for him. Both speak of the return of the King in splendour, and the re-establishment of the rule of law: a terror to the transgressors and a comfort to the oppressed.