History of the Peloponnesian War

On the delivery of this message by the envoys, the Plataeans resolved not to be unfaithful to the Athenians but to endure, if it must be, seeing their lands laid waste and any other trials that might come to them, and not to send out again, but to answer from the wall that it was impossible for them to do as the Lacedaemonians proposed.

As soon as be had received this answer, King Archidamus proceeded first to make a solemn appeal to the gods and heroes of the country in words following:—‘Ye gods and heroes of the Plataean territory, be my witnesses that not as aggressors originally, nor until these had first departed from the common oath, did we invade this land, in which our fathers offered you their prayers before defeating the Medes, and which you made auspicious to the Hellenic arms; nor shall we be aggressors in the measures to which we may now resort, since we have made many fair proposals but have not been successful. Graciously accord that those who were the first to offend may be punished for it, and that vengeance may be attained by those who would righteously inflict it.’