NOTES for Isa 37:1-38
Rabshakeh does not let up. He does not want to understand that all these events, including his withdrawal from Jerusalem, are not accidental, and that the Lord will not let him take the city. He sets out his view of the order of things in a programmatic letter sent to King Hezekiah. And this very letter, filled with blasphemy, Hezekiah brings before the face of the Lord without further words.
Several centuries later Jesus will advise believers not to follow the example of the pagans in prayer and not to be wordy. Here we have a similar situation: a pagan knows no measure in words and, at the same time, does not understand what he is saying. But in Hezekiah's silence one hears the calm that can belong only to someone who firmly trusts in the Lord. The Lord's answer was given to the king through Isaiah, but Hezekiah prepared his heart to hear the answer while standing silently before the Lord.
God is not mocked. By blaspheming Him, Rabshakeh brought destruction not only on his army but also on his king.