In Jeremiah 1:7, God commands the reluctant prophet to go; the strength in 1:18 enables that call.

In Jeremiah 15:20, the same promise of a bronze wall is repeated, reinforcing God's assurance of protection against opposition.

Jeremiah 36:27-32 shows Jeremiah writing a new scroll after the king burned it, demonstrating his iron pillar resilience.

Jeremiah 15:10 shows the opposition Jeremiah faced, fulfilling the conflict God promised to protect him from in 1:18.

Jeremiah 15:12 uses iron imagery (northern iron) to describe enemies, directly connecting to Jeremiah's iron pillar in 1:18.

In Jeremiah 15:18, Jeremiah complains that God's promise of protection (1:18) seems broken, contrasting the fortified city with his incurable pain.

Jeremiah 20:7 laments that God deceived him into this calling, contrasting the promised strength in 1:18 with his mockery.

Jeremiah 26:24 shows Ahikam protecting Jeremiah, a concrete instance of the divine protection promised in 1:18.

Jeremiah 21 contains oracles against Jerusalem’s leaders—an example of Jeremiah fulfilling his role as a fortified city against them.

Jeremiah 22 delivers judgment messages to Judah’s kings, showing the prophet in action against those he was set to oppose.

Jeremiah 26 records Jeremiah’s bold defense—demonstrating the courage and protection promised in his commissioning.

Ezekiel 3:8 tells of God making the prophet's face hard against his opponents, echoing the iron pillar imagery.

Ezekiel 3:9 compares the prophet's forehead to emery harder than flint, paralleling the divine hardening for confrontation.

Isaiah 49:2 shows God making the servant's mouth a sharp sword, paralleling Jeremiah being made iron and bronze — both depict divine empowerment of a messenger.