When the Rabshakeh heard that the king of Assyria had left Lachish, he withdrew and found the king fighting against Libnah.
8. And Rabshakeh having returned. He now declares how Rabshakeh, without doing anything, returned to his king, not to the same place where he had left him; for he understood that he had raised the siege of Lachish, and had departed into Egypt for the purpose of attacking Libnah. Some think that this city is Pelusium, others choose rather to assign it to Judea.
We may observe here, 1. That, if God give us inward satisfaction in his promise, this may confirm us in our silently bearing reproaches. God answered Hezekiah, but it does not appear that he, after deliberation, sent any answer to Rabshakeh; but, God having taken the work into his own hands, he quietly left the matter with him. So Rabshakeh returned to the king his master for fresh instructions. 2.
Commenting on Isaiah 37:8-20
And he heard say concerning Tirhakah king of Ethiopia,.... Not Rabshakeh, but the king of Assyria heard a rumour of this Ethiopian king coming out to war against him: his name, in Josephus (w), is Tharsices; in the Septuagint version it is Tharaca; and by Africanus (x) he is called Taracus; and is the same, who, by Strabo (y), out of Megasthenes, is named Tearcon...