Commentaries:
Jamieson, Fausset, and Brown
For—rather, "Truly." This is Isaiah's reply to the scoffers: Your drunken questions shall be answered by the severe lessons from God conveyed through the Assyrians and Babylonians; the dialect of these, though Semitic, like the Hebrew, was so far different as to sound to the Jews like the speech of stammerers (compare Isaiah 33:19; Isaiah 36:11). To them who will not understand God will speak still more unintelligibly.
The prophet now turns to Judah; a gracious promise to the remnant ("residue"); a warning lest through like sins Judah should share the fate of Samaria.
crown—in antithesis to the "fading crown" of Ephraim (Isaiah 28:1, Isaiah 28:3).
the residue—primarily, Judah, in the prosperous reign of Hezekiah (II Kings 18:7), antitypically, the elect of God; as He here is called their "crown and diadem," so are they called His (Isaiah 62:3); a beautiful reciprocity.
Other Jamieson, Fausset, and Brown entries containing Isaiah 28:11:
Isaiah 28:9-10
Isaiah 32:4
Isaiah 33:19
Ezekiel 3:6
1 Corinthians 14:21
1 Corinthians 14:22
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