Isaiah 19:21
And the LORD shall be known to Egypt, and the Egyptians shall know the LORD in that day, and shall do sacrifice and oblation; yea, they shall vow a vow unto the LORD, and perform it.
And the Lord shall be known to Egypt,.... The means of knowing him would be granted them; which were partly through the Bible being translated into the Greek language, at the request of Ptolemy king of Egypt, which was then understood in that country, and this was a considerable time before the coming of Christ; and chiefly through the Gospel being brought hither by the Evangelist Mark, and others, whereby many of them were brought to a spiritual, experimental, and evangelical knowledge of Christ:
and the Egyptians shall know the LORD; own and acknowledge him, profess faith in him, hope of happiness by him, love of him, and subjection to him, his Gospel and ordinances:
and shall do sacrifice and oblation; not such sacrifice and oblation as were enjoined by the ceremonial law, since those would be now abrogated; but the spiritual sacrifices of prayer, praise, and good works, and of the presentation of themselves, as a holy, living, and acceptable sacrifice to God, their reasonable service: under these ceremonial rites is signified the whole spiritual worship of the New Testament:
yea, they shall vow a vow unto the LORD, and perform it; lay themselves under obligation to serve the Lord, and act according to it; see Ecclesiastes 5:4 and this is to be understood not of legal vows, as that of the Nazarite, or any other, but of the spiritual one of praise and thanksgiving; see Psalms 50:14.