So Sennacherib king of Assyria departed, and went and returned, and dwelt at Nineveh.

Wesley's Notes

19:36 So Sennacherib, and c. - The manner of the expression intimates the great disorder and distraction of mind he was in.

Jamieson-Fausset-Brown Bible Commentary

36. So Sennacherib king of Assyria . went and returned-the same way as he came (2Ki 19:33). The route is described (Isa 10:28-32). The early chariot track near Beyrout is on the rocky edge of Lebanon, which is skirted by the ancient Lycus (Nahr-el Kelb). On the perpendicular face of the limestone rock, at different heights, are seen slabs with Assyrian inscriptions, which having been deciphered, are found to contain the name of Sennacherib. Thus, by the preservation of these tablets, the wrath of the Assyrian invaders is made to praise the Lord.

dwelt at Nineveh-This statement implies a considerable period of time, and his Annals carry on his history at least five years after his disastrous campaign at Jerusalem. No record of his catastrophe can be found, as the Assyrian practice was to record victories alone. The sculptures give only the sunny side of the picture.

Matthew Henry's Concise Commentary

19:35-37 That night which followed the sending of this message to Hezekiah, the main body of their army was slain. See how weak the mightiest men are before Almighty God. Who ever hardened himself against Him and prospered? The king of Assyria's own sons became his murderers. Those whose children are undutiful, ought to consider whether they have not been so to their Father in heaven? This history exhibits a strong proof of the good of firm trust and confidence in God. He will afflict, but not forsake his people. It is well when our troubles drive us to our knees. But does it not reprove our unbelief? How unwilling are we to rest on the declaration of Jehovah! How desirous to know in what way he will save us! How impatient when relief is delayed! But we must wait for the fulfilling of his word. Lord, help our unbelief.