The prophetic mission is directed at a deeply entrenched, stubborn, and shameless generation. The audience is part of a dark legacy. While their ancestors sinned, the children now continue on the exact same path with intense brazenness [רש״י]. In fact, this new generation has actually surpassed their parents in their sheer stubbornness and refusal to change [מצודת דוד].
The character of the people is defined by a complete lack of shame. A person who possesses a natural sense of humility has a soft, expressive face that changes color, turning red or white when confronted with their wrongs. In stark contrast, a brazen person maintains a hard, unyielding expression, remaining entirely indifferent to any correction [רד״ק, מצודת ציון]. This stubbornness manifests as two distinct flaws. First, they suffer from an intellectual blindness that allows them to confidently reject logical arguments. Second, they are emotionally numb, meaning they feel absolutely no fear regarding the warnings or the punishments that await them [מלבי״ם].
Facing such a closed-off and defiant audience raises a practical challenge for the prophet. To navigate this, he is instructed to explicitly declare that his message comes directly from God. One perspective views this as a necessary tactic. Because the people are so hardened, they would never listen to the prophet if he spoke on his own authority, requiring him to constantly remind them that his words are spoken directly on behalf of God [מצודת דוד]. Another perspective suggests that making this declaration is actually the core purpose of the mission itself. The primary goal is not necessarily to convince the people to change their ways, but rather to deliver a clear message that God is still watching over them and has not abandoned them to the fate of other nations. By arriving and speaking in God's name, the prophet guarantees that, whether the people choose to listen or refuse, they will undeniably know that God's messenger was present among them [מלבי״ם].