The Philistines lived in a coastal strip between the Mediterranean and the land of Israel and Judah. Three major cities of the Philistines were Ashdod, Ashkelon, and Gaza, where the temple of Dagon was located.
Egyptian records from the 12th-13th centuries B.C. mention the Philistines in connection with the Sea Peoples. In the 8th-7th century B.C., starting with Tilgath-Pileser III, the Assyrians rule in Philistia. In 604 B.C. Nebuchadnezzar destroyed the Philistine cities of Ashdod, Akron, Ashkelon, and Akron.
Source: Philistine Iconography: A Wealth of Style and Symbolism, by David Ben-Shlomo


