John Gills Exposition of the Bible Commentary - Isaiah 37:31
And the remnant that is escaped of the house of Judah ,.... The few that escaped out of the cities of Judah, upon Sennacherib's invasion of the land, and besieging and taking the fenced cities thereof, who fled to Jerusalem for safety; these were a type of the remnant, according to the election of grace, the few that are chosen of God, the special people redeemed by Christ, the little flock of his, the small number that enter in at the strait gate, and are saved; and who escape, not the fall... read more
Matthew Henry's Complete Commentary - Isaiah 37:21-38
We may here observe, 1. That those who receive messages of terror from men with patience, and send messages of faith to God by prayer, may expect messages of grace and peace from God for their comfort, even when they are most cast down. Isaiah sent a long answer to Hezekiah's prayer in God's name, sent it in writing (for it was too long to be sent by word of mouth), and sent it by way of return to his prayer, relation being thereunto had: ?Whereas thou hast prayed to me, know, for thy comfort,... read more