Esau sought to obtain his parents' approval by marrying one of Abraham's descendants.
However "he failed to consider that Ishmael had been separated from the house of Abraham and family of promise by the appointment of God; so that it only furnished another proof that he had no thought of the religious interests of the chosen family and was unfit to be the recipient of divine revelation."675
This great story teaches that when God's people know His will they should not resort to deceptive, manipulative schemes to attain spiritual success but must pursue God's will righteously. Every member of Isaac's family behaved in a self-centered and unprincipled manner, yet God graciously overcame their sins. This reminds us that His mercy is the ultimate ground of salvation.
