Demosthenes in his "The Third Philippic" warned peoples of greek of an imminent attack.
Step-by-step explanation:
Demosthenes was a popular Greek orator and statesmen. He had deep insights into contemproary politics and ancient Greek culture. He was also one of the greatest rhetorical orators, a skill that he learned from great orators preceding him.
In his famous speech "The Third Philippic" which was prepared by Demosthenes in the year 342 BC, he warns his countrymen of an imminent attack. He makes sober warning to the people that it is better to die ten thousand times than showing servitude to Philip. he warned peoples against harbouring any false hopes of them being safe under the reign of Philip and be ready to suffer for further consequences.