Commentaries:
Jamieson, Fausset, and Brown
highway—free communication, resting on the highest basis, the common faith of both (Isaiah 19:18; Isaiah 11:16). Assyria and Egypt were joined under Alexander as parts of his empire: Jews and proselytes from both met at the feasts of Jerusalem. A type of gospel times to come.
serve with—serve Jehovah with the Assyrians. So "serve" is used absolutely (Job 36:11).
Other Jamieson, Fausset, and Brown entries containing Isaiah 19:23:
Job 36:11
Isaiah 11:16
Micah 7:12
Micah 7:12
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