Genesis 26:35

Which were a grief of mind unto Isaac and to Rebekah. They were literally a bitterness of spirit to them, they caused them many a bitter hour, their heathen descent itself being mortifying, and their heathen belief and conduct agreeing with their ancestral traditions. Where temporal, fleshly factors are decisive in the matter of marriage, the chances are that true happiness will not live in such a home. Christian young people will not think of entering upon this most important step without the knowledge and consent of their parents.