31 God desires that the divine life and the human life be joined together to become one life; this oneness is an organic union, a union in life—a grafted life—vv. 3-5; 11:17-24.
42 To believe into Christ is to receive Him as the divine life into us that we may have an organic union with Him in the divine life—John 3:15; 15:4-5.
5B Romans 12 speaks of the Body from the angle of the organic union, from the uniting life, from a life that unites us together, not only with Christ but with all the other members of Christ—vv. 4-5: