Θεσσαλοὶ δὲ ὑπὸ ἀναγκαίης τὸ πρῶτον ἐμήδισαν, ὡς διέδεξαν, ὅτι οὔ σφι ἥνδανε τὰ οἱ Ἀλευάδαι ἐμηχανῶντο. ἐπείτε γὰρ ἐπύθοντο τάχιστα μέλλοντα διαβαίνειν τὸν Πέρσην ἐς τὴν Εὐρώπην, πέμπουσι ἐς τὸν Ἰσθμὸν ἀγγέλους· ἐν δὲ τῷ Ἰσθμῷ ἦσαν ἁλισμένοι πρόβουλοι τῆς Ἑλλάδος ἀραιρημένοι ἀπὸ τῶν πολίων τῶν τὰ ἀμείνω φρονεουσέων περὶ τὴν Ἑλλάδα.
ἀπικόμενοι δὲ ἐπὶ τούτους τῶν Θεσσαλῶν οἱ ἄγγελοι ἔλεγον· Ἄνδρες Ἕλληνες, δεῖ φυλάσσεσθαι τὴν ἐσβολὴν τὴν Ὀλυμπικήν, ἵνα Θεσσαλίη τε καὶ ἡ σύμπασα ᾖ Ἑλλὰς ἐν σκέπῃ τοῦ πολέμου. ἡμεῖς μέν νυν ἕτοιμοι εἰμὲν συμφυλάσσειν, πέμπειν δὲ χρὴ καὶ ὑμέας στρατιὴν πολλήν, ὡς, εἰ μὴ πέμψετε, ἐπίστασθε ἡμέας ὁμολογήσειν τῷ Πέρσῃ· οὐ γάρ τι προκατημένους τοσοῦτο πρὸ τῆς ἄλλης Ἑλλάδος μούνους πρὸ ὑμέων δεῖ ἀπολέσθαι.
βοηθέειν δὲ οὐ βουλόμενοι ἀναγκαίην ἡμῖν οὐδεμίαν οἷοί τε ἐστὲ προσφέρειν· οὐδαμὰ γὰρ ἀδυνασίης ἀνάγκη κρέσσων ἔφυ. ἡμεῖς δὲ πειρησόμεθα αὐτοί τινα σωτηρίην μηχανώμενοι.
As for the Thessalians, they at first had taken the side of the Persians against their will, and they gave proof that they were not pleased by that which the Aleuadai were designing; for so soon as they heard that the Persian was about to cross over into Europe, they sent envoys to the Isthmus: now at the Isthmus were assembled representatives of Hellas chosen by the cities which had the better mind about Hellas: having come then to these, the envoys of the Thessalians said: “Hellenes, ye must guard the pass by Olympos, in order that both Thessaly and the whole of Hellas may be sheltered from the war. We are prepared to join with you in guarding it, but ye must send a large force as well as we; for if ye shall not send, be assured that we shall make agreement with the Persian; since it is not right that we, standing as outposts so far in advance of the rest of Hellas, should perish alone in your defence: and not being willing to come to our help, ye cannot apply to us any force to compel inability; but we shall endeavour to devise some means of safety for ourselves.”
ταῦτα ἔλεγον οἱ Θεσσαλοί. οἱ δὲ Ἕλληνες πρὸς ταῦτα ἐβουλεύσαντο ἐς Θεσσαλίην πέμπειν κατὰ θάλασσαν πεζὸν στρατὸν φυλάξοντα τὴν ἐσβολήν. ὡς δὲ συνελέχθη ὁ στρατός, ἔπλεε διʼ Εὐρίπου· ἀπικόμενος δὲ τῆς Ἀχαιίης ἐς Ἄλον, ἀποβὰς ἐπορεύετο ἐς Θεσσαλίην, τὰς νέας αὐτοῦ καταλιπών, καὶ ἀπίκετο ἐς τὰ Τέμπεα ἐς τὴν ἐσβολὴν ἥ περ ἀπὸ Μακεδονίης τῆς κάτω ἐς Θεσσαλίην φέρει παρὰ ποταμὸν Πηνειόν, μεταξὺ δὲ Ὀλύμπου τε ὄρεος ἐόντα καὶ τῆς Ὄσσης.
ἐνθαῦτα ἐστρατοπεδεύοντο τῶν Ἑλλήνων κατὰ μυρίους ὁπλίτας συλλεγέντες, καί σφι προσῆν ἡ Θεσσαλῶν ἵππος· ἐστρατήγεε δὲ Λακεδαιμονίων μὲν Εὐαίνετος ὁ Καρήνου ἐκ τῶν πολεμάρχων ἀραιρημένος, γένεος μέντοι ἐὼν οὐ τοῦ βασιληίου, Ἀθηναίων δὲ Θεμιστοκλέης ὁ Νεοκλέος. ἔμειναν δὲ ὀλίγας ἡμέρας ἐνθαῦτα·
ἀπικόμενοι γὰρ ἄγγελοι παρὰ Ἀλεξάνδρου τοῦ Ἀμύντεω ἀνδρὸς Μακεδόνος συνεβούλευόν σφι ἀπαλλάσσεσθαι μηδὲ μένοντας ἐν τῇ ἐσβολῇ καταπατηθῆναι ὑπὸ τοῦ στρατοῦ τοῦ ἐπιόντος, σημαίνοντες τὸ πλῆθός τε τῆς στρατιῆς καὶ τὰς νέας. ὡς δὲ οὗτοί σφι ταῦτα συνεβούλευον, χρηστὰ γὰρ ἐδόκεον συμβουλεύειν καί σφι εὔνοος ἐφαίνετο ἐὼν ὁ Μακεδών, ἐπείθοντο.
δοκέειν δὲ μοι, ἀρρωδίη ἦν τὸ πεῖθον, ὡς ἐπύθοντο καὶ ἄλλην ἐοῦσαν ἐσβολὴν ἐς Θεσσαλοὺς κατὰ τὴν ἄνω Μακεδονίην διὰ Περραιβῶν κατὰ Γόννον πόλιν, τῇ περ δὴ καὶ ἐσέβαλε ἡ στρατιὴ ἡ Ξέρξεω. καταβάντες δὲ οἱ Ἕλληνες ἐπὶ τὰς νέας ὀπίσω ἐπορεύοντο ἐς τὸν Ἰσθμόν.
Thus spoke the Thessalians; and the Hellenes upon this resolved to send to Thessaly by sea an army of men on foot to guard the pass: and when the army was assembled it set sail through Euripos, and having come to Alos in the Achaian land, it disembarked there and marched into Thessaly leaving the ships behind at Alos, and arrived at Tempe, the pass which leads from lower Macedonia into Thessaly by the river Peneios, going between the mountains of Olympos and Ossa. There the Hellenes encamped, being assembled to the number of about ten thousand hoplites, and to them was added the cavalry of the Thessalians; and the commander of the Lacedemonians was Euainetos the son of Carenos, who had been chosen from the polemarchs, not being of the royal house, and of the Athenians Themistocles the son of Neocles. They remained however but few days here, for envoys came from Alexander the son of Amyntas the Macedonian, who advised them to depart thence and not to remain in the pass and be trodden under foot by the invading host, signifying to them at the same time both the great numbers of the army and the ships which they had. When these gave them this counsel, they followed the advice, for they thought that the counsel was good, and the Macedonian was evidently well-disposed towards them. Also, as I think, it was fear that persuaded them to it, when they were informed that there was another pass besides this to the Thessalian land by upper Macedonia through the Perraibians and by the city of Gonnos, the way by which the army of Xerxes did in fact make its entrance. So the Hellenes went down to their ships again and made their way back to the Isthmus.
αὕτη ἐγένετο ἡ ἐς Θεσσαλίην στρατηίη, βασιλέος τε μέλλοντος διαβαίνειν ἐς τὴν Εὐρώπην ἐκ τῆς Ἀσίης καὶ ἐόντος ἤδη ἐν Ἀβύδῳ. Θεσσαλοὶ δὲ ἐρημωθέντες συμμάχων οὕτω δὴ ἐμήδισαν προθύμως οὐδʼ ἔτι ἐνδοιαστῶς, ὥστε ἐν τοῖσι πρήγμασι ἐφαίνοντο βασιλέι ἄνδρες ἐόντες χρησιμώτατοι.
Such was the expedition to Thessaly, which took place when the king was about to cross over from Asia to Europe and was already at Abydos. So the Thessalians, being stripped of allies, upon this took the side of the Medes with a good will and no longer half-heartedly, so that in the course of events they proved very serviceable to the king.