We may observe here, 1. That the best way to baffle the malicious designs of our enemies against us is to be driven by them to God and to our duty and so to fetch meat out of the eater. Rabshakeh intended to frighten Hezekiah from the Lord, but it proves that he frightens him to the Lord. The wind, instead of forcing the traveller's coat from him, makes him wrap it the closer about him. The more Rabshakeh reproaches God the more Hezekiah studies to honour him, by rending his clothes for the dishonour done to him and attending in his sanctuary to know his mind. 2. That it well becomes great men to desire the prayers of good men and good ministers. Hezekiah sent messengers, and honourable ones, those of the first rank, to Isaiah, to desire his prayers, remembering how much his prophecies of late had plainly looked towards the events of the present day, in dependence upon which, it is probable, he doubted not but that the issue would be comfortable, yet he would have it to be so in answer to prayer: This is a day of trouble, therefore let it be a day of prayer. 3. When we are most at a plunge we should be most earnest in prayer: Now that the children are brought to the birth, but there is not strength to bring forth, now let prayer come, and help at a dead lift. When pains are most strong let prayers be most lively; and, when we meet with the greatest difficulties, then is a time to stir up not ourselves only, but others also, to take hold on God. Prayer is the midwife of mercy, that helps to bring it forth. 4. It is an encouragement to pray though we have but some hopes of mercy (Isa 37:4): It may be the Lord thy God will hear; who knows but he will return and repent? The it may be of the prospect of the haven of blessings should quicken us with double diligence to ply the oar of prayer. 5. When there is a remnant left, and but a remnant, it concerns us to lift up a prayer for that remnant, Isa 37:4. The prayer that reaches heaven must be lifted up by a strong faith, earnest desires, and a direct intention to the glory of God, all which should be quickened when we come to the last stake. 6. Those that have made God their enemy we have no reason to be afraid of, for they are marked for ruin; and, though they may hiss, they cannot hurt. Rabshakeh has blasphemed God, and therefore let not Hezekiah be afraid of him, Isa 37:6. He has made God a party to the cause by his invectives, and therefore judgment will certainly be given against him. God will certainly plead his own cause. 7. Sinners' fears are but prefaces to their falls. He shall hear the rumour of the slaughter of his army, which shall oblige him to retire to his own land, and there he shall be slain, Isa 37:7. The terrors that pursue him shall bring him at last to the king of terrors, Job 18:11, Job 18:14. The curses that come upon sinners shall overtake them.

So Rabshakeh returned,.... To the king of Assyria his master, to give him an account how things went at Jerusalem, and that he could get no direct answer from the king of Judah, and to consult with him what was proper to be done in the present situation of things; leaving the army before Jerusalem, under the command of the other two generals. For that he should take the army with him does not seem reasonable, when Hezekiah and his people were in such a panic on account of it; besides, the king of Assyria's letters to Hezekiah clearly suppose the army to be still at Jerusalem, or his menacing letters would have signified nothing; and after this the destruction of the Assyrian army before Jerusalem is related:

and found the king of Assyria warring against Libnah; a city in the tribe of Judah, Jos 10:29, and lay nearer to Jerusalem than Lachish, where Rabshakeh left him; so that he seemed to be drawing his army towards that city, on which his heart was set. Josephus (u) makes him to be at this time besieging Pelusium, a city in Egypt, but wrongly; which has led some into a mistake that Libnah and Pelusium are the same:

for he had heard that he was departed from Lachish; where he was, when he sent him to Jerusalem, Isa 36:2, having very probably taken it.

(u) Antiqu. l. 10. c. 1. sect. 4.

blast--rather, "I will put a spirit (Isa 28:6; Kg1 22:23) into him," that is, so influence his judgment that when he hears the report (Isa 37:9, concerning Tirhakah), he shall return [GESENIUS]; the "report" also of the destruction of his army at Jerusalem, reaching Sennacherib, while he was in the southwest of Palestine on the borders of Egypt, led him to retreat.

by the sword-- (Isa 37:38).