When King Hezekiah received the blasphemous message from Rabshakeh, he showed deep distress by tearing his clothes and donning sackcloth before seeking refuge in the temple for prayer. He understood the grave threat posed by the Assyrian army and the dire state of Jerusalem, acknowledging his reliance on God for deliverance rather than on military might or alliances. Ultimately, this event leads to a significant miraculous intervention by God, resulting in the destruction of the Assyrian army and securing Jerusalem's safety.