2 Kings 19:8

Overview - 2 Kings 19
1	Hezekiah mourning, sends to Isaiah to pray for them.
6	Isaiah comforts them.
8	Sennacherib, going to encounter Tirhakah, sends a blasphemous letter to Hezekiah.
14	Hezekiah's prayer.
20	Isaiah's prophecy of the pride and destruction of Sennacherib, and the good of Zion.
35	An angel slays the Assyrians.
36	Sennacherib is slain by his own sons.

2 Kings 19:8  (King James Version)
So Rabshakeh returned, and found the king of Assyria warring against Libnah: for he had heard that he was departed from Lachish.