What shall one then answer the messengers of the nation? That the LORD hath founded Zion, and the poor of his people shall trust in it. The messengers of the nation "The ambassadors of the nations" - The Septuagint read גוים goyim, εθνων, plural; and so the Chaldee, and one MS. The ambassadors of the neighboring nations, that send to congratulate Hezekiah on his success, which in his answer he will ascribe to the protection of God. See 2 Chronicles 32:23. Or, if גוי goi singular, the reading of the text, be preferred, the ambassadors sent by the Philistines to demand peace. - L.
The Lord hath founded Zion - Kimchi refers this to the state of Zion under Hezekiah, when the rest of the cities of Judea had been taken, and this only was left for a hope to the poor of God's people: and God so defended it that Rabshakeh could not prevail against it.
The true Church of God is a place of safety; for as all its members are devoted to God, and walk in his testimonies, so they are continually defended and supported by him. In the congregations of his people, God dispenses his light and salvation; hence his poor or humble ones expect in his ordinances the blessings they need.
Commentary on the Bible, by Adam Clarke [1831].