If deliberately mocking God is simply a "petty insult" to you, then I don't know how to argue with you. The point I'm making is that them and the whole people of Israel were warned, hundreds of years earlier, that such things would happen to them as they increasingly disobeyed and rebelled against the Lord, whom they vowed to obey. But they didn't listen, and they were attacked, and other judgements came upon the country, ultimately until the day Israel was conquered by the Babylonians.