Commentaries
19:18-25 The words, In that day, do not always refer to the passage just before. At a time which was to come, the Egyptians shall speak the holy language, the Scripture language; not only understand it, but use it. Converting grace, by changing the heart, changes the language; for out of the abundance of the heart the mouth speaks. So many Jews shall come to Egypt, that they shall soon fill five cities. Where the sun was worshipped, a place infamous for idolatry, even there shall be a wonderful reformation. Christ, the great Altar, who sanctifies every gift, shall be owned, and the gospel sacrifices of prayer and praise shall be offered up. Let the broken-hearted and afflicted, whom the Lord has wounded, and thus taught to return to, and call upon him, take courage; for He will heal their souls, and turn their sorrowing supplications into joyful praises. The Gentile nations shall not only unite with each other in the gospel fold under Christ, the great Shepherd, but they shall all be united with the Jews. They shall be owned together by him; they shall all share in one and the same blessing. Meeting at the same throne of grace, and serving with each other in the same business of religion, should end all disputes, and unite the hearts of believers to each other in holy love.
18-22. In that day, &c.—Suffering shall lead to repentance. Struck with "terror" and "afraid" (Isa 19:17) because of Jehovah's judgments, Egypt shall be converted to Him: nay, even Assyria shall join in serving Him; so that Israel, Assyria, and Egypt, once mutual foes, shall be bound together by the tie of a common faith as one people. So a similar issue from other prophecies (Isa 18:7; 23:18).
five cities—that is, several cities, as in Isa 17:6; 30:17; Ge 43:34; Le 26:8. Rather, five definite cities of Lower Egypt (Isa 19:11, 13; 30:4), which had close intercourse with the neighboring Jewish cities [Maurer]; some say, Heliopolis, Leontopolis (else Diospolis), Migdol, Daphne (Tahpanes), and Memphis.
language of Canaan—that is, of the Hebrews in Canaan, the language of revelation; figuratively for, They shall embrace the Jewish religion: so "a pure language" and conversion to God are connected in Zep 3:9; as also the first confounding and multiplication of languages was the punishment of the making of gods at Babel, other than the One God. Pentecost (Ac 2:4) was the counterpart of Babel: the separation of nations is not to hinder the unity of faith; the full realization of this is yet future (Zec 14:9; Joh 17:21). The next clause, "swear to the Lord of Hosts," agrees with this view; that is, bind themselves to Him by solemn covenant (Isa 45:23; 65:16; De 6:13).
city of destruction—Onias; "city of the sun," that is, On, or Heliopolis; he persuaded Ptolemy Philometer (149 B.C.) to let him build a temple in the prefecture (nome) of Heliopolis, on the ground that it would induce Jews to reside there, and that the very site was foretold by Isaiah six hundred years before. The reading of the Hebrew text is, however, better supported, "city of destruction"; referring to Leontopolis, the site of Onias' temple: which casts a reproach on that city because it was about to contain a temple rivalling the only sanctioned temple, that at Jerusalem. Maurer, with some manuscripts, reads "city of defense" or "deliverance"; namely, Memphis, or some such city, to which God was about to send "a saviour" (Isa 19:20), to "deliver them."