The "one concept" is imbedded in God's creation. It was Jesus' desire to promulgate unity by giving them glory "that they may be one, just as We are one" (Jn 17:22). This involves a higher spiritual principle. Ephesians 2:15 says his purpose is "so that in Himself He might make the two into one man." Christ "nourishes and cherishes" (5:29) the church since "we are members of His body" (:30). In the same way "husbands ought also to love their own wives as their own bodies" (:28). Husband and wife should be like "Christ and the church" (:32). "He who loves his own wife loves himself" (:28). This is similar to one of the two commandments upon which the Law and Prophets depend (Mt 22:40). It is "'You shall love your neighbor as yourself'" (:39).

Unity is the objective. "For this reason a man shall leave his father and mother and shall be joined to his wife, and the two shall become one flesh" (Eph 5:31). The purpose of Christ caring for his body, the church, is the reason why the man leaves parents and unites with his wife. Paul says it is a "mystery" (:32). Furthermore, it is the same reason Jesus gave the Pharisees that divorce was unscriptural when he quoted Genesis 2:24. This quote is identical to Paul’s in Ephesians 5:31. The two reasons are synonymous. Being a member of Christ’s body is why a divorce between Christians is prohibited. So does such a divorce presume that the parties have lost sight of their standing and purpose in Christ?