His words produced laughter and jesting, since it was then the last day of the month, and the king, seeing that he was perplexed, and being always eager to support his prophecies, gave orders to reckon that day, not as the thirtieth of the month, but as the twenty-eighth; and then, after the trumpet had sounded the signal, he attacked the walls with greater vigour than he had at first intended. The assault became fierce, and even those troops which had been left in camp could not restrain themselves, but ran in throngs to help the assailants, and the Tyrians gave up the fight. So Alexander took the city on that day.
Edition :
Plutarch. Plutarch's Lives. with an English Translation by. Bernadotte Perrin. Cambridge, MA. Harvard University Press. London. William Heinemann Ltd. 1919. 7.
Remark :
motive: Concerning the religious motive: Alexander doubled his effort when he learned that a seer had predicted the fall of Tyre within this month. As the month was near to its end, a quick success was needed to prove the seer right, thus encouraging his soldiers. See also Plut. Alex. 25.1.