Commentaries:
Jamieson, Fausset, and Brown
former things—Former predictions of God, which were now fulfilled, are here adduced as proof that they ought to trust in Him alone as God; namely, the predictions as to Israel's restoration from Babylon.
new—namely, predictions as to Messiah, who is to bring all nations to the worship of Jehovah (Isaiah 42:1, Isaiah 42:4, Isaiah 42:6).
spring forth—The same image from plants just beginning to germinate occurs in Isaiah 43:19; Isaiah 58:8. Before there is the slightest indication to enable a sagacious observer to infer the coming event, God foretells it.
Other Jamieson, Fausset, and Brown entries containing Isaiah 42:9:
Isaiah 25:1
Isaiah 41:22
Isaiah 41:29
Isaiah 43:9
Isaiah 43:19
Isaiah 48:3
Isaiah 48:6
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