Receiving divine prophecy can be a complex and deeply emotional experience. For Jeremiah, it was a sudden flash of enlightenment, inner acceptance, and spiritual joy that stood in sharp contrast to the harsh reality of his everyday life. Unlike other prophets who would actively prepare themselves to receive God's word through joy and music, Jeremiah was constantly weighed down by sadness due to the heavy messages of destruction and anger he was forced to carry. Because he was in no state to prepare for it, the prophecy arrived unexpectedly, catching him off guard like a suddenly discovered object [מלבי״ם]. It was a pure revelation of God's word [ביאור שטיינזלץ]. Alternatively, this sudden joy of discovery can also be understood as reflecting the teachings of the Torah given to Moses and earlier prophets, which brought Jeremiah the kind of thrill one feels when unearthing a great treasure [חומת אנך].
Upon receiving the divine message, Jeremiah's reaction is compared to the physical act of eating. This imagery illustrates his deep inner acceptance, intense desire, and longing. Just as a starving person eagerly consumes bread, or someone savors a delicious meal, Jeremiah took the prophecy into his very core with a strong appetite and complete willingness [רש״י, רד״ק, מצודת דוד, מלבי״ם, ביאור שטיינזלץ]. Though God's message was composed of many distinct details and instructions, Jeremiah absorbed it as one unified essence and a single, cohesive whole [רד״ק, מנחת שי].
Absorbing this message filled his heart with profound gladness. Part of this happiness stemmed from a renewed sense of hope that the people might finally listen to his warnings [רש״י]. Furthermore, the divine speech itself possessed a unique power; it directly awakened the joy required to receive prophecy. This gladness was granted entirely from heaven, breaking through a life that was otherwise filled with sorrow and misery [מלבי״ם, ביאור שטיינזלץ]. Ultimately, the greatest source of Jeremiah’s happiness was his direct connection with God. The sheer abundance of prophecy he experienced and the profound privilege of being recognized as God's prophet brought him immense joy [מצודת דוד, ביאור שטיינזלץ]. He took special comfort in knowing that God's name was officially associated with him, standing in stark contrast to the false prophets of his generation who were known only as prophets of Baal [רד״ק].