ירמיהו, פרק כ״ט, פסוק כ״ה

A strong rebuke from God is directed at a man who assumed personal authority. He reached out to the leadership and the people remaining in Jerusalem by sending them a series of letters [ביאור שטיינזלץ]. The core reason for God's harsh response stems from the arrogant manner in which these messages were delivered.

Rather than representing the collective voice of the exiled community, this individual sent the letters strictly under his own name. By acting as though the entire matter rested solely on his shoulders, he revealed a deep sense of pride and self-importance [מצודת דוד]. The narrative then shifts to present the actual words he wrote, serving as a direct introduction to the contents of those letters [מצודת דוד, ביאור שטיינזלץ].