Deuteronomy 32:15
But Jeshurun waxed fat, and kicked: you are waxen fat, you are grown thick, you are covered with fatness; then he forsook God which made him, and lightly esteemed the Rock of his salvation.
Nave's Topical Index—AKJV

Deuteronomy 33:5,26
And he was king in Jeshurun, when the heads of the people and the tribes of Israel were gathered together.
Nave's Topical Index—AKJV

Isaiah 44:2
Thus said the LORD that made you, and formed you from the womb, which will help you; Fear not, O Jacob, my servant; and you, Jesurun, whom I have chosen.
Nave's Topical Index—AKJV