ירמיהו, פרק א׳, פסוק י״ח

Preparing a young prophet for a lonely and difficult mission requires granting him extraordinary mental and spiritual resilience. God equips him to stand alone against every level of leadership and society, ensuring he possesses the immense strength needed to remain firm and fearless [מצודת דוד, ביאור שטיינזלץ, צאינה וראינה].

To illustrate this invincibility, God uses powerful imagery of impenetrable structures. Just as a fortified city cannot be easily conquered, the prophet's opponents will never defeat him, and like an iron pillar, he will be impossible to bend or break [רד״ק]. This prominent stance ensures that the people cannot simply ignore him. He is established as a highly visible target, forcing all factions to fight him fiercely, much like an army attempting to breach an enemy stronghold. In this relentless struggle, he will find no human assistance, yet his enemies will fail because God is with him to save him [מלבי״ם].

The prophet is positioned directly against the entire land. His difficult task is likened to forcing the inhabitants to drink a cup of a curse [רד״ק]. He must confront the kings who reject moral instruction out of sheer pride, as well as the officials and priests who betray their sacred duty to guide and teach the masses. Finally, he must stand against the general populace [מלבי״ם]. In all these encounters, the prophet is positioned in direct opposition to his nation [רש״י, רד״ק].

However, a different approach views these structural metaphors not merely as symbols of harsh conflict, but as representations of the prophet's varied relationships with the people. In this light, the fortified city illustrates that as long as he prophesied, he actually served as a shield and support for the kings, much like a fortress protects its inhabitants. He acted as an unyielding iron pillar against the priests who stubbornly refused moral instruction. Yet, for the simple people who were receptive to his warnings, he was like copper walls; just as copper physically reacts to changing conditions by sweating, these people showed a genuine, visible response to his words [אהבת יהונתן].