I will cut off the inhabitant from Ashdod, And him who holds the scepter from Ashkelon; And I will turn my hand against Ekron; And the remnant of the Philistines will perish," says the Lord Yahweh.
Regarding Philistia.  Sennacherib fulfilled Amos' prophecy regarding Philistia; and his exploits against the very cities mentioned in these verses is recorded in cuneiform inscriptions of how he humbled the kings of Ashkelon, Ekron, etc.[32]  And, significantly, Sennacherib did not ascend the throne until 702 B.C.[33]  The destruction of Philistia thus occurred in the seventh century B.C., whereas, Amos prophesied their doom in the eighth century B.C.