What does 2 Chronicles 32:15 mean?

'Don't let Hezekiah fool you or trick you like this. Don't believe him! No god of any nation or kingdom has ever been able to save his people from me or my ancestors. How much less will your God save you from me!' 2 Chronicles 32:15 - Modern Text Bible

(Sennacherib's message was pure intimidation, insisting that resistance was pointless and faith in God was useless.)