19:20-34 All Sennacherib's motions were under the Divine cognizance. God himself undertakes to defend the city; and that person, that place, cannot but be safe, which he undertakes to protect. The invasion of the Assyrians probably had prevented the land from being sown that year. The next is supposed to have been the sabbatical year, but the Lord engaged that the produce of the land should be sufficient for their support during those two years. As the performance of this promise was to be after the destruction of Sennacherib's army, it was a sign to Hezekiah's faith, assuring him of that present deliverance, as an earnest of the Lord's future care of the kingdom of Judah. This the Lord would perform, not for their righteousness, but his own glory. May our hearts be as good ground, that his word may strike root therein, and bring forth fruit in our lives.
20. Then Isaiah … sent—A revelation having been made to Isaiah, the prophet announced to the king that his prayer was heard. The prophetic message consisted of three different portions:—First, Sennacherib is apostrophized (2Ki 19:21-28) in a highly poetical strain, admirably descriptive of the turgid vanity, haughty pretensions, and presumptuous impiety of the Assyrian despot. Secondly, Hezekiah is addressed (2Ki 19:29-31), and a sign is given him of the promised deliverance—namely, that for two years the presence of the enemy would interrupt the peaceful pursuits of husbandry, but in the third year the people would be in circumstances to till their fields and vineyards and reap the fruits as formerly. Thirdly, the issue of Sennacherib's invasion is announced (2Ki 19:32-34).