The correct answer is a quote from Matthew 19:5-6, which states that a man shall leave his parents and be joined to his wife, and they shall become one flesh. This passage emphasizes the sacredness and permanence of marriage, stating that what God has joined together, no human should separate. It highlights the importance of honoring marriage and keeping the marriage bed undefiled, while warning against immorality and adultery. This passage serves as a biblical basis for the understanding of marriage as a lifelong covenant between a man and a woman, intended for their well-being and the procreation and upbringing of children.