Lift up thy prayer for the remnant... — Isaiah’s characteristic words (Isaiah 1:9; Isaiah 10:21) had impressed itself on the king’s mind. Now that town after town of Judah had fallen into Sennacherib’s hands (forty-six, according to his inscriptions — Records of the Past, i. 38), those who were gathered within the walls of Jerusalem were as a mere remnant of the people.
Related Commentaries of Isaiah 37:4
Isaiah 37:4
4 It may be the LORD thy God will hear the words of Rabshakeh, whom the king of Assyria his master hath sent to reproach the living God, and will reprove the words which the LORD thy God hath heard: wherefore lift up thy prayer for the remnant that is left.b