2 Kings 19:20

Then Isaiah the son of Amoz sent to Hezekiah, saying, Thus saith the LORD God of Israel, That which thou hast prayed to me against Sennacherib king of Assyria I have heard.

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 (2 Kings 19:21) in a highly poetical strain, admirably descriptive of the turgid vanity, haughty pretensions, and presumptuous impiety of the Assyrian despot. Secondly, Hezekiah is addressed (2 Kings 19:29), and a sign given him of the promised deliverance-namely, that for two years the presence of the enemy would interrupt the peaceful pursuits of husbandry, but on 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 (2 Kings 19:32).