John Gills Exposition of the Bible Commentary - Isaiah 19:23
In that day shall there be a highway out of Egypt to Assyria ,.... It signifies that there should be peace between them, all hostilities should cease, free trade and commerce with each other should be opened, and nothing should hinder communion with one another; which some think had some show of accomplishment in the times of Psammiticus; but it chiefly refers to Gospel times, and to the Christian communion between one nation and another, that receive the Gospel, though before implacable... read more
Matthew Henry's Complete Commentary - Isaiah 19:18-25
Out of the thick and threatening clouds of the foregoing prophecy the sun of comfort here breaks forth, and it is the sun of righteousness. Still God has mercy in store for Egypt, and he will show it, not so much by reviving their trade and replenishing their river again as by bringing the true religion among them, calling them to, and accepting them in, the worship of the one only living and true God; and these blessings of grace were much more valuable than all the blessings of nature... read more