Commentaries:
Barnes' Notes
And the Lord shall be known to Egypt - Shall be worshipped and honored by the Jews who shall dwell there, and by those who shall be proselyted to their religion.
And the Egyptians shall know the Lord - That many of the Egyptians would be converted to the Jewish religion there can be no doubt. This was the result in all countries where the Jews had a residence (compare the notes at Acts 2:9-11).
And shall do sacrifice - Shall offer sacrifices to Yahweh. They would naturally go to Jerusalem as often as practicable, and unite with the Jews there, in the customary rites of their religion.
And oblations - The word minichāh ' oblation,' denotes any offering that is not a "bloody" sacrifice - a thank-offering; an offering of incense, flour, grain, etc. (see the notes at Isaiah 1:13) The sense is, that they should be true worshippers of God.
They shall vow a vow ... - They shall be sincere and true worshippers of God. The large numbers of the Jews that dwelt there; the fact that many of them doubtless were sincere; the circumstances recorded Acts 2:9-11, that Jews were in Jerusalem on the day of Pentecost; and the fact that the true religion was carried to Egypt, and the Christian religion established there, all show how fully this prediction was fulfilled.
Other Barnes' Notes entries containing Isaiah 19:21:
Isaiah 45:14
DISCLAIMER: Church of the Great God (CGG) provides these resources to aid the individual in studying the Bible. However, it is up to the individual to "prove all things, and hold fast to that which is good" (I Thessalonians 5:21). The content of these resources does not necessarily reflect the views of CGG. They are provided for information purposes only.