Allah Ta'alah had decreed that that the Bani Isra'il will be successful, having the best of both worlds, the material and the spiritual, as long as they continue to obey Allah. But, whenever they deviate from the dictates of Faith, they shall be put to disgrace, and that they would be subjected to punishment at the hands of enemies and disbelievers...

...The purpose of narrating these events relating to the Bani Isra'il in the Quran and making Muslims listen to them seems to be to let Muslims understand that they are no exception to this divine law. Their respect and ascendancy, both in this world and the Hereafter, are dependent upon their obedience to Allah Ta'alah. Whenever they would start disobeying Allah Ta'alah and His Holy Prophet ﷺ their enemies and disbelievers would be given power over them, who would also desecrate their places of worship.

Abstract from Ma'ariful Quran, Interpretation of Surah Bani Isra'il, by Mufti Muhammad Shafi RE