Genesis 24:37
And my master made me swear, saying, Thou shalt not take a wife to my son of the daughters of the Canaanites, in whose land I dwell: And my master made me swear, saying, Thou shalt not take a wife to my son of the daughters of the Canaanites, in whose land I dwell:
The verse is the servant repeating Abraham's solemn, oath-bound charge not to take a wife for Isaac from the daughters of the Canaanites, in whose land Abraham lived. The wife was instead to be sought from Abraham's kindred in Mesopotamia. The restriction was meant to help Isaac maintain the pure worship of the living God. Isaac himself was not to leave Canaan, and the servant would be released from the oath if no woman was willing to leave her family to come.
The choice was entrusted to an experienced, God-fearing servant. Isaac, at forty, submitted to the choice made through his father's servant and trusted God to direct in obtaining a wife, and his course is an example for children who profess to fear God, with the matter approached in the fear of God. Trained to love a life of noble obedience and to value obedience, Isaac accepted his father's judgment and the servant's guidance.
Parents are to follow Abraham by commanding their households after them, training children to yield to and respect parental authority, and taking responsibility to guide their children's affections toward suitable companions for sons and daughters rather than leaving the choice wholly unguided. Leaving the affections of the young unguided and unrestrained leaves them to be largely controlled by Satan, and Abraham's course rebukes parents who refuse to guide and restrain them. Isaac's marriage to Rebekah brought love and comfort, showing the happiness that can follow careful, prayerful choice and wise parental guidance.