John Gills Exposition of the Bible Commentary - Isaiah 19:20
And it shall be for a sign and for a witness unto the Lord of hosts in the land of Egypt ,.... This refers either to what goes before, that the altar and pillar were signs and witnesses that the Lord was believed in, professed, and worshipped there; or to what follows after, that the Lord's hearing the cries of men, and answering them, by sending a great Saviour to them, is a token and testimony for him of his great love unto them: for they shall cry unto the Lord because of the... 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