Sennacherib's campaign in the Levant in 701 BCE was a military campaign undertaken by the Neo-Assyrian Empire to bring the region back under control following a rebellion against Assyrian rule in 705 BCE. After the death of Sargon II and the succession of Sennacherib, several states in the Levant renounced their allegiance to Assyria. The rebellion involved several small states: Sidon and Ashkelon (which were taken by force) and Byblos, Ashdod, Ammon, Moab, and Edom who then submitted to the payment of tribute to Assyria. Most notably King Hezekiah of Judah, encouraged by Egypt, joined the rebellion and was subsequently invaded by the Assyrians who captured most of the cities and towns in the region. Hezekiah was trapped in Jerusalem by an Assyrian army, and the surrounding lands were given to Assyrian vassals in Ekron, Gaza, and Ashdod; however, the city was not taken, and Hezekiah was allowed to remain on his throne as an Assyrian vassal after paying a large tribute. The events of the campaign in Judah are famously related in the Bible (2 Kings 18–19; Isaiah 36–37; and 2 Chronicles 32) which culminate in an "angel of the Lord" striking down 185,000 Assyrians outside the gates of Jerusalem, prompting Sennacherib's return to Nineveh.