History of the Peloponnesian War

But the Athenians, distressed by the plague as well as by the war, which had recently broken out and was now at its height, thought it a serious matter to make a new enemy of Lesbos, which had a fleet and power unimpaired; and so at first they would not listen to the charges, giving greater weight to the wish that they might not be true. When, however, the envoys whom they sent could not persuade the Mytilenaeans to stop their measures for political union and their preparations, they became alarmed and wished to forestall them.

So they suddenly despatched forty ships, which happened to be ready for a cruise around the Peloponnesus, under the command of Cleïppides son of Deinias and two others;

for word had come to them that there was a festival of Apollo Maloeis[*](ie. Apollo, god of Malea, the place north of the city (cf. 3.4.5), where Apollo had a temple.) outside Mytilene at which the whole populace kept holiday, and that they might hope to take them by surprise if they should make haste. And if the attempt succeeded, well and good; but if not, the generals were to order the Mytilenaeans to deliver up their ships and pull down their walls, and if they disobeyed, to go to war.