“Jeshurun.” Jeshurun is a prophetic name God calls Israel. It is from the Hebrew root for “upright,” and so it could loosely be translated “the Upright,” or “Righteous-nation.” Although Israel was certainly not upright in Isaiah’s time, they will be in the future. It occurs four times in Scripture, here, and Deuteronomy 32:15 and 33:5, 26.
[For more on Jeshurun, see commentary on Deuteronomy 32:15.]