In the days of Ahaz the son of Jotham, the son of Uzziah, king of Judah, Rezin the king of Syria and Pekah the son of Remaliah, the king of Israel, went up to Jerusalem to war against it, but could not prevail against it. Bible other translations

“went up to Jerusalem to war against it.” The date of the attack is not exactly known, but it would have had to have been between the time Ahaz became king (c. 742 BC) and the beginning of Assyria’s attack on Damascus, the capital of Syria (c. 734 BC). Assyria had been expanding its empire, and Syria and Israel no doubt felt threatened. It is not clear how attacking Judah would help that situation, but perhaps they did not want an enemy at their back while they were fighting Assyria, or perhaps they thought if they could depose Ahaz that the person they appointed king would then help them fight Assyria.

Commentary for: Isaiah 7:1