2 Kings 19:8
So Rab–shakeh returned, and found the king of Assyria warring against Libnah: for he had heard that he was departed from Lachish.
Cross-reference
2 Kings 18:14
Historical context
2 Kings 18:14 describes Hezekiah submitting to Sennacherib at Lachish, then in 2 Kings 19:8 Sennacherib moves to Libnah. This cross-reference provides the prior event, showing the campaign's progression.
Isaiah 37:8
Parallel
Isaiah 37:8 is the identical parallel account of Rabshakeh's return and the king's move to Libnah.
Isaiah 37:9
Historical context
Isaiah 37:9 continues the same narrative, reporting the news of Tirhakah that follows the return from Lachish.