Isaiah 8:4-8 describes the Assyrian invasion that carries away Samaria — the very judgment that God's word against Jacob in Isaiah 9:8 initiates.

Isaiah 17:4 describes the humbling of Jacob's glory — the same judgment that the sent word in 9:8 brings about.

Isaiah 7:8 prophesies Ephraim's downfall — the same northern kingdom against which the word in Isaiah 9:8 is sent.

Micah 1:1-8 pronounces judgment on Samaria — a parallel oracle to the word sent against Israel in Isaiah 9:8.

In Zechariah 1:6, this same principle is affirmed: God's spoken word overtakes and brings repentance or judgment.

Zechariah 5:1-4 depicts God's word as a flying curse that enters homes — a vivid image of the word sent out accomplishing its judgment.

Zechariah 9:1 begins a similar 'burden of the word of the Lord against' a land — showing a common prophetic formula for judgment oracles.