Thou, Jesurun... — The ideal name of Israel as “the upright one;” so the Book of Jasher is the book of the “upright,” of the heroes of Israel. (See Note on Deuteronomy 32:15.) The name is substituted for the Israel of the preceding verse, as pointing to the purpose of God in their election.
Related Commentaries of Isaiah 44:2
Isaiah 44:2
2 Thus saith the LORD that made thee, and formed thee from the womb, which will help thee; Fear not, O Jacob, my servant; and thou, Jesurun, whom I have chosen.