Commentaries:
Jamieson, Fausset, and Brown
fail—faint; man in religion may become as the almost expiring flax-wick (Isaiah 42:3), but not so He in His purposes of grace.
discouraged—literally, "broken," that is, checked in zeal by discouragements (compare Isaiah 49:4-5). ROSENMULLER not so well translates, "He shall not be too slow on the one hand, nor run too hastily on the other."
judgment—His true religion, the canon of His judgments and righteous reign.
isles . . . wait, etc.—The distant lands beyond sea shall put their trust in His gospel way of salvation. Matthew 12:21 virtually gives the sense, with the inspired addition of another aspect of the same thing, "In his name shall the Gentiles trust" (as "wait for" here means, Isaiah 30:18). "His law" is not something distinct from Himself, but is indeed Himself, the manifestation of God's character ("name") in Christ, who is the embodiment of the law (Isaiah 42:21; Jeremiah 23:6; Romans 10:4). "Isles" here, and in Isaiah 42:12, may refer to the fact that the populations of which the Church was primarily formed were Gentiles of the countries bordering on the Mediterranean.
Other Jamieson, Fausset, and Brown entries containing Isaiah 42:4:
Isaiah 41:29
Isaiah 42:1
Isaiah 42:9
Isaiah 49:4
Isaiah 50:7
Isaiah 50:10
Isaiah 60:9
Isaiah 62:1
Isaiah 62:2
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