Israel"s rebellion against her Father stands in stark contrast to God"s gracious care. "Jeshurun" ( Deuteronomy 32:5; cf. Deuteronomy 33:26; Numbers 23:10) means "upright one" or "righteous nation." This pet name reminded Israel of her holy calling. As an ox, Jeshurun had become unresponsive due to the fatness she had gained as a result of God"s blessings. [source][source][source]
"The chiastic structure by which Deuteronomy 32:4-14 match Deuteronomy 32:15-18 in reverse suggests the reversal of Israel"s pledges of covenant commitment to the Lord." [1][source]