Jamieson, Fausset and Brown on Genesis 28:6-9

6-9. when Esau saw that Isaac had blessed Jacob, &c.--Desirous to humor his parents and, if possible, get the last will revoked, he became wise when too late (see Mt 25:10), and hoped by gratifying his parents in one thing to atone for all his former delinquencies. But he only made bad worse, and though he did not marry a "wife of the daughters of Canaan," he married into a family which God had rejected. It showed a partial reformation, but no repentance, for he gave no proofs of abating his vindictive purposes against his brother, nor cherishing that pious spirit that would have gratified his father--he was like Micah (see Jud 17:13).