To better understand what the Bible says about divorce, we should first review what the Bible says about marriage. The Bible describes marriage as a union between two individuals who become "one flesh."
Dr. Craig Keener explains, "The phrase 'one flesh,' or being part of another person's flesh or bone, is often used in the Old Testament with reference to family relationships; therefore, when a husband and a wife become one flesh, in one sense it means that they become part of one another's family. Yet the Bible portrays the marriage relationship as an even deeper level of intimacy. It's a physical union where you actually share part of your own being with another person."
Lou Priolo says, "When two people become married, they become one person. When that marriage is separated by divorce, there are significant consequences because the one flesh relationship is severed. That is a difficult thing to adjust to, and it requires all of God's resources to be brought to bear so that you can learn how to live as a person who is no longer one flesh with someone."
In marriage, two people become one. In divorce, that one flesh is torn apart. But be assured that as painful as the divorce is, with God, the healing will be that much more complete.
"For this reason a man will leave his father and mother and be united to his wife, and they will become one flesh" (Genesis 2:24).