And the LORD shall be known to Egypt, and the Egyptians shall know the LORD in that day, and shall make sacrifice and offering; yea, they shall vow a vow unto the LORD, and perform it.
Read Chapter 19
George Leo Haydock
Egypt. The kings often caused sacrifices to be offered for them; but they were not acceptable, as long as they continued idolaters. The country was converted to Christianity, (Calmet) and the Anchorets performed their vows and penitential exercises, to the admiration of all. (Haydock)