King Joash of Israel began his reign in the thirty-seventh year of the reign of King Joash of Judah, so there was some overlap. King Amaziah started ruling Judah in the second year of King Joash of Israel. Amaziah of Judah battled against the Edomites and then challenged Joash of Israel to battle (2 Kings 14:7–8). Joash refused, essentially telling Amaziah he was needlessly stirring up trouble (2 Kings 14:9–10). Amaziah did not heed the warning, and Joash of Israel defeated Judah in battle. Second Chronicles 25:20 says that Judah’s defeat was “because they sought the gods of Edom.”