(20) Thou sayest (but they are but vain Words).--Literally, thou hast said--a mere lip-word it was--i.e., insincere language, an utterance which thou knewest to be false. (Comp. our expression, "lip-service.")

I have counsel . . .--The margin is wrong.

Verse 20. - Thou sayest (but they are but vain words); literally, words of lips; i.e. words which the lips speak, without the heart having any conviction of their truth. We must suppose that Sennacherib has either heard from his spies that Hezekiah is speaking to the people as he represents him to be speaking, or conjectures what he is likely to say. According to the writer of Chronicles (2 Chronicles 32:7, 8), what he did say was very different. He neither boasted of "counsel" nor of material "strength;" but simply said, "There be more with us than with him: with him is an arm of flesh; but with us is the Lord our God to help us and to fight our battles." I have counsel and strength for the war. Sennacherib imagines that Hezekiah's real trust is in the "fleshly arm" of Egypt, and in the counselors who have advised and brought about the alliance. And perhaps he is not far wrong. Hezekiah, it would seem, "halted between two opinions." He hoped for aid from Egypt; but, if it failed, then he hoped for the Divine help promised by Isaiah. Now on whom dost thou trust, that thou rebellest against me?

18:17-37 Rabshakeh tries to convince the Jews, that it was to no purpose for them to stand it out. What confidence is this wherein thou trustest? It were well if sinners would submit to the force of this argument, in seeking peace with God. It is, therefore, our wisdom to yield to him, because it is in vain to contend with him: what confidence is that which those trust in who stand out against him? A great deal of art there is in this speech of Rabshakeh; but a great deal of pride, malice, falsehood, and blasphemy. Hezekiah's nobles held their peace. There is a time to keep silence, as well as a time to speak; and there are those to whom to offer any thing religious or rational, is to cast pearls before swine. Their silence made Rabshakeh yet more proud and secure. It is often best to leave such persons to rail and blaspheme; a decided expression of abhorrence is the best testimony against them. The matter must be left to the Lord, who has all hearts in his hands, committing ourselves unto him in humble submission, believing hope, and fervent prayer.And the king of Assyria sent Tartan and Rabsaris, and Rabshakeh from Lachish to King Hezekiah with a great host against Jerusalem,.... Notwithstanding he took the above large sum of money of him, so false and deceitful was he: these were three generals of his army, whom he sent to besiege Jerusalem, while he continued the siege of Lachish; only Rabshakeh is mentioned in Isaiah 36:2 he being perhaps chief general, and the principal speaker; whose speech, to the end of this chapter, intended to intimidate Hezekiah, and dishearten his people, with some circumstances which attended it, are recorded word for word in Isaiah 36:1 throughout; See Gill on Isaiah 36:1 and notes on that chapter.