2A We are "one Body in Christ," having an organic union with Him; this union makes us one in life with Him and with all the other members of His Body—vv. 4-5:
31 Two words from Romans 12:5 indicate the organic union—in Christ; in Christ always implies the thought or the fact that we are organically one with Christ.
42 The actuality of the Body is the remaining in the organic union with Christ; this is why John 15 charges us to abide in Him; to abide in Him simply means to remain in the organic union.