Verse 18
Hezekiah considered it beneath his dignity to negotiate personally with the generals of Sennacherib. He sent three of his leading ministers out to the front of the city: Eliakim the son of Hilkiah, the captain of the castle, who had only received the appointment to this office a short time before in Shebna’s place (Isa 22:20-21); Shebna, who was still secretary of state (ספר: see at 2Sa 8:17); and Joach the son of Asaph, the chancellor (מזכּיר: see at 2Sa 8:16).
Rabshakeh made a speech to these three (2Ki 18:19-25), in which he tried to show that Hezekiah’s confidence that he would be able to resist the might of the king of Assyria was perfectly vain, since neither Egypt (2Ki 18:21), nor his God (2Ki 18:22), nor his forces (2Ki 18:23), would be able to defend him.
Verse 19
2Ki 18:19 “The great king:” the Assyrian, Babylonian, and Persian kings all assumed this title (cf. Eze 26:7; Dan 2:37), because kings of conquered lands were subject to them as vassals (see at Isa 10:8). “What is this confidence that thou cherishest?” i.e., how vain or worthless is this confidence!
Verse 20
2Ki 18:20 “Thou sayest ... it is only a lip-word...: counsel and might for battle;” i.e., if thou speakest of counsel and might for battle, that is only שׂפתים דּבר, a word that merely comes from the lips, not from the heart, the seat of the understanding, i.e., a foolish and inconsiderate saying (cf. Pro 14:23; Job 11:2). - עמרתּ is to be preferred to the אמרתּי of Isaiah as the more original of the two. עתּה, now, sc. we will see on whom thou didst rely, when thou didst rebel against me.
Verse 21
On Egypt? “that broken reed, which runs into the hand of any one who would lean upon it (thinking it whole), and pierces it through.” This figure, which is repeated in Eze 29:6-7, is so far suitably chosen, that the Nile, representing Egypt, is rich in reeds. What Rabshakeh says of Egypt here, Isaiah had already earnestly impressed upon his people (Isa 30:3-5), to warn them against trusting in the support of Egypt, from which one party in the nation expected help against Assyria.
Verse 22
Hezekiah (and Judah) had a stronger ground of confidence in Jehovah his God. Even this Rabshakeh
