Genesis 24:40
And he said unto me, The LORD, before whom I walk, will send his angel with thee, and prosper thy way; and thou shalt take a wife for my son of my kindred, and of my father’s house: And he said unto me, The LORD, before whom I walk, will send his angel with thee, and prosper thy way; and thou shalt take a wife for my son of my kindred, and of my father’s house:
Abraham assured his servant that the Lord, before whom he walked in faithful service, would send His angel with him to guide him and prosper his way so that he would take a wife for Isaac from Abraham's kindred and father's house. The wife was to be sought among Abraham's relatives in Mesopotamia, not among the Canaanites. Isaac himself was to remain in Canaan, and the woman would have to leave her own family to join him there in maintaining the worship of the true God.
This careful course of Abraham in arranging Isaac's marriage teaches parents to guide their children's affections toward companions whom they judge suitable for marriage. At the same time the account shows Isaac trusting God to guide him in obtaining a wife, and holds him up as an example of seeking God's direction in choosing a spouse.
Isaac willingly accepted and submitted to his father's judgment through the choice made by his God-fearing father's servant, by which course Abraham taught him noble obedience. Children who profess to fear God should follow Isaac's example by making marriage a subject of prayer and by respecting their parents' guidance. Isaac's submission in this divinely guided marriage led to a union that became a source of love and comfort.