Matthew Poole and continuators on Isaiah 55:5

5 Behold, thou shalt call a nation that thou knowest not , and nations that knew not thee shall run unto thee , because of the LORD thy God , and for the holy One of Israel; for he hath glorified thee .

Thou, O Messiah, of whom he now spake, v. 4. and to whom he suddenly turneth his speech, as is very common in the Prophets.

To wit, unto thy self, and to the knowledg of thy self, as appears from the following words, and by thee unto acquaintance and fellowship with God.

Or rather, didst not know, to wit, with that special knowledg which implies approbation, and tender Care and Affection, as words of knowledg are most frequently used in Scripture: the Gentiles to whom, in former times, thou didst not make known thy Law and Covenant, and the way of Salvation. Act. 14. 16. & 17. 30.

That had but little knowledge of God, and no knowledg of the Messiah.

Upon thy call shall speedily and readily come to thee to receive Instructions from thee, and to follow thee whithersoever thou shalt lead them.

Because the Lord shall by many evident and unquestionable tokens, manifest himself to be thy God, and thee to be his Son and faithful servant.

Because the God of Israel, who is the only true God, will highly honour thee by his singular presence with thee, by his almighty Power accompanying thy Word, and making it wonderfully effectual for the conversion of an innumerable company, both of Jews and Gentiles, and by confirming thy Word with illustrious signs and miracles, and particularly by thy Resurrection and glorious Ascension. These and other like considerations were the motives which convinced the Gentiles, that Christ was the true Messiah, and the Religion which he taught was the true Religion.

Marginal references: Or, knewest not.