The tyrant was ostensibly the ally of the Thebans, but his ambitions and independent schemes were coming into ever greater prominence. As he retired from Bœotia after the battle of Leuctra he had surprised Heraclea and destroyed the walls of the city; he would have no one able to bar his free entry into Hellas. Now, in the summer of 370, he was equipping a magnificent army to attend the Pythian games at Delphi. His object in so doing was not merely to make a display of his kingly power. Delphi, the seat and centre of the amphictyones, had always been the connecting link between Thessaly and the other Greek states. By the splendid homage he offered to the god in his sacrificial procession, Jason intended to renew the old obsolete relations; and relying upon the fact that the Thessalian races had a majority in the ancient amphictyonic council, to usurp the guardianship of the oracle and the management of the games, and to secure for himself an influence in Greek politics proportionate to his power. The great body of troops which was to accompany him in this procession sufficiently emphasised these claims and demands. The northern Greeks were not unaware of the danger that threatened them--neither in all likelihood were the Thebans. Xenophon’s narrative amply proves with what apprehension they watched his steps, and how great was the disquietude amongst the dwellers in northern Greece. Jason’s sudden death was to the Hellenes the deliverance from a nightmare, and the fact that his murderers were honoured as saviours from tyranny and oppression, is an unmistakable token of the temper aroused in Greece by his last enterprise. But it was absolutely impossible for Thebes and the league of middle Greece to wage war upon Sparta in the Peloponnesus while Jason was planning his march to Delphi. They could not withdraw troops from Bœotia without incurring the risk that he would make use of the circumstance to give the fullest scope to his ambitious designs.[g] A CONGRESS AT ATHENS