John Gill Commentary 2 Chronicles 32:11

"Doth not Hezekiah persuade you, to give you over to die by famine and by thirst, saying, Jehovah our God will deliver us out of the hand of the king of Assyria?" — 2 Chronicles 32:11 (ASV)

Does not Hezekiah persuade you to give over yourselves to die
by famine, and by thirst
Suggesting that would be their case if they did not surrender:

saying, the Lord our God shall deliver us out of the hand of the king
of Assyria? (See Gill on Isaiah 36:15).