דברי הימים ב, פרק כ׳, פסוק ל״ד

At the close of King Jehoshaphat’s life, a complete record of his reign, spanning from his earliest days to his final acts, was preserved for future generations. The responsibility of documenting these events was entrusted to a prominent spiritual figure of that era, Jehu son of Hanani. He was a prophet who had once sternly rebuked Jehoshaphat for offering aid to the wicked [רש"י, ביאור שטיינזלץ]. During this period, Jehu held the official role of recording the chronicles for the kings of Judah [מלבי"ם].

Jehu's writings did not remain isolated but were woven into a larger royal collection. The primary approach among commentators is that his accounts of Jehoshaphat were physically recorded and integrated into the broader Book of the Kings of Israel [מצודת דוד, רד"ק]. This specific historical compilation, however, was lost over the centuries and is no longer available today [ביאור שטיינזלץ]. Alternatively, some suggest this serves as a direct pointer to existing records, indicating that the stories of Jehoshaphat had already been documented and can be found in the standard Book of Kings [מלבי"ם].