Isaiah 37:8
So Rabshakeh returned, and found the king of Assyria warring against Libnah: for he had heard that he was departed from Lachish.
Cross-reference
2 Kings 19:8
Parallel
2 Kings 19:8 gives the identical narrative of Rabshakeh finding the king at Libnah.
2 Kings 19:9
Parallel
2 Kings 19:9 continues the account with Tirhakah's threat prompting a second message to Hezekiah.
2 Chronicles 32:9
Parallel
2 Chronicles 32:9 parallels this account, specifically noting Sennacherib's siege of Lachish—confirming the historical setting.