Isaiah 7:16 gives the parallel prophecy of the child Immanuel, using the same time marker of knowing good and evil to predict the fall of both kings.

Isaiah 10:6-14 describes the Assyrian king as God's rod executing judgment and becoming proud—develops the agent of the judgment prophesied here.

Isaiah 17:3 directly predicts the same event: the end of Damascus and Ephraim—reinforcing the certainty of the fall.

Isaiah 7:4 calls Rezin and Pekah 'smoldering stumps'—the same enemies whose wealth 8:4 predicts will be taken.

Isaiah 10:5 identifies Assyria as God's rod—the same instrument used to plunder Damascus and Samaria in 8:4.

Isaiah 17:1 prophesies Damascus becoming ruins—the same destruction as the plundered wealth of Damascus in 8:4.

Isaiah 7:8 gives a longer timeline for Ephraim's end, while 8:4 predicts immediate plunder of Samaria.

Isaiah 9:11 says the LORD stirs up adversaries against Israel—the Assyrians who carry off Samaria's spoil.

2 Kings 15:29 records the historical fulfillment: Tiglath-pileser captures northern Israel, matching the spoil of Samaria here.

2 Kings 16:9 records the fall of Damascus to Assyria, directly fulfilling the prophecy about Damascus' riches being taken.

2 Kings 17:6 records the historical fall of Samaria and deportation to Assyria, fulfilling the prophecy of spoil carried away.

2 Kings 18:11 similarly recounts the exile of Israel to Assyria, the fulfillment of the plunder foretold in 8:4.