Deuteronomy 32:32 - Ellicott's Commentary On The Whole Bible

Their vine — i.e., Israel’s,” not the enemies; going back to Deuteronomy 32:30, “Their Rock,” i.e., Israel’s Rock, “had sold them... for their vine is of the vine of Sodom.” Comp. Hosea 10:1 : “Israel is an empty vine; he bringeth forth fruit unto himself;” and Isaiah 5:2; Isaiah 5:7 : “He looked that it should bring forth grapes, and it brought forth wild grapes... He looked for judgment, but behold oppression; for righteousness, but behold a cry.”