Isaiah 20:1
In the year that Tartan came unto Ashdod, (when Sargon the king of Assyria sent him,) and fought against Ashdod, and took it;
Cross-reference
Isaiah 14:31
Prophetic fulfillment
Isaiah 14:31 warns Philistia of an invader from the north, which Isaiah 20:1 records as Sargon's capture of Ashdod.
2 Kings 18:17
Historical context
In 2 Kings 18:17, the same Assyrian commander (Tartan) is sent against Jerusalem — a parallel historical account of Assyrian campaigns.
Amos 1:8
Historical context
Amos 1:8 pronounces judgment on Philistine cities including Ashdod, directly connecting to the Assyrian conquest described here.