מלכים ב, פרק י״ד, פסוק כ״ג

The historical account shifts its focus back to the Northern Kingdom of Israel, marking the rise to power of Jeroboam, the son of Joash. His rule was defined by a continuation of the spiritual failures of the past. He chose to do evil in the eyes of God, deeply mirroring the legacy of his namesake. Just as he carried the name of the very first king of the divided kingdom of Israel, Jeroboam the son of Nebat, he also fully adopted his destructive ways and carried on his legacy of sin [אברבנאל].

The timing of his ascent to the throne aligns with the fifteenth year of Amaziah, the king of Judah. This specific timeline is the result of overlapping royal histories. Amaziah took the throne of Judah during the second year of Joash, the king of Israel. Because Joash ruled for a total of sixteen years, his death and the subsequent rise of his son Jeroboam occurred exactly after fourteen full years of Amaziah's rule, placing the transition squarely in his fifteenth year [מצודת דוד, רלב״ג]. Jeroboam went on to rule for a total of forty-one years. This recorded duration is calculated using a system of partial years, where even a fraction of a year is counted as a complete year in the official royal records [מצודת דוד].