Which public speaker said that the macedonian king Philip was considered a threat to greek freedom?

Demosthenes of Athens warned the Athenians not the other Greeks. He was protecting Athenian interests and their hegemony over Greece because Macedonia wanted to lead the Greeks. Demosthenes harbored a personal grudge against Philip because of the humiliation he suffered when he lost his power of speech at the Macedonian court (Aischines, On the Embassy 35), Demosthenes called Philip a barbarian but he would call anyone he did not like a barbarian to insult them, including fellow Athenians (Dem. 21.150) much like someone today being labelled as "un-American".