Hezekiah discovered deep concern at the dishonour done to God by Rabshakeh's blasphemy. Those who speak from God to us, we should in a particular manner desire to speak to God for us. The great Prophet is the great Intercessor.
Those are likely to prevail with God, who lift up their hearts in prayer. Man's extremity is God's opportunity. While his servants can speak nothing but terror to the profane, the proud, and the hypocritical, they have comfortable words for the discouraged believer.