Jesurun

Jesurun (also spelled Jeshurun; meaning: the upright one) is a poetic name for Israel used four times in Scripture, always with an affectionate or honorific connotation. It appears in Deuteronomy 32:15 (the Song of Moses), 33:5, 33:26, and once in Isaiah 44:2. The name comes from the Hebrew root yashar, "upright" or "straight," and idealizes Israel as the nation God intended it to be — upright, covenant-faithful, and beloved.

In Deuteronomy 32:15, the name is used with painful irony: "Jeshurun grew fat and kicked — you were fat, stout, and sleek; then he forsook God who made him." The contrast between the ideal expressed by the name and Israel's actual rebellion heightens the prophetic pathos. Isaiah 44:2 uses it as a tender term of address: "Fear not, O Jacob my servant, Jeshurun whom I have chosen" — reassuring the exiles of God's ongoing election and care despite their failure.