Charles Ellicott Commentary 2 Chronicles 32:15

"Now therefore let not Hezekiah deceive you, nor persuade you after this manner, neither believe ye him; for no god of any nation or kingdom was able to deliver his people out of my hand, and out of the hand of my fathers: how much less shall your God deliver you out of my hand?" — 2 Chronicles 32:15 (ASV)

Neither yet believe him. — And do not believe him.

How much less ... deliver you. —Rather, much less will your gods deliver you; or, all the more your gods will not deliver you. (Compare to Isaiah 37:10-11.) According to ancient conceptions the gods of strong nations were strong gods. Now the Assyrians had vanquished stronger nations than Judah, and therefore, as they ignorantly supposed, stronger deities than the God of Judah. (Some Hebrew manuscripts and all the versions have the verb in the singular, which gives the sense, “much less will your god deliver you.”)