8 When the field commander heard that the king of Assyria had left Lachish, he withdrew and found the king fighting against Libnah.

Read Isaiah 37:8 Using Other Translations

So Rabshakeh returned, and found the king of Assyria warring against Libnah: for he had heard that he was departed from Lachish.
The Rabshakeh returned, and found the king of Assyria fighting against Libnah, for he had heard that the king had left Lachish.
Meanwhile, the Assyrian chief of staff left Jerusalem and went to consult the king of Assyria, who had left Lachish and was attacking Libnah.