History of the Peloponnesian War

The Chians and Pedaritus about the same time, notwithstanding [their former repulse, and] that Astyochus was still backward, sent messengers to him, desiring him to come with his whole fleet to help them, being besieged, and not to suffer the greatest of their confederate cities in all Ionia to be thus shut up by sea and ravaged by land, as it was.

For the Chians having many slaves, more than any one state except that of the Lacedaemonians, whom for their offences they the more ungently punished because of their number, many of them, as soon as the Athenians appeared to be settled in their fortifications, ran over presently to them; and were they, that knowing the territory so well, did it the greatest spoil.

Therefore the Chians said he must help them whilst there was hope and possibility to do it, Delphinium being still in fortifying and unfurnished, and greater fences being in making both about their camp and fleet. Astyochus, though he meant it not before, because he would have made good his threats, yet when he saw the confederates were willing, he was bent to have relieved them.