Answer: We are members of one body, (verse 15).
MORE INFORMATION AND/OR OTHER SCRIPTURE REFERENCES:
Romans 12:4-5: "Just as each of us
has one body with many members, and these members do not all have
the same function, so in Christ we who are many form one body, and
each member belongs to all the others."
Ephesians 5:23, 28-30: "For the
husband is the head of the wife as Christ is the head of the
church, His body, of which He is the Savior...In this same
way, husbands ought to love their wives as their own bodies. He who
loves his wife loves himself. After all, no one ever hated
his own body, but he feeds and cares for it, just as Christ does
the church--for we are members of His body."
Colossians 1:18-20, 24: "And He is
the head of the body, the church; He is the beginning and the
firstborn from among the dead, so that in everything He might have
the supremacy. For God was pleased to have all His fullness
dwell in Him, and through Him to reconcile to Himself all things,
whether things on earth or things in heaven, by making peace
through His blood, shed on the cross...Now I rejoice in what
was suffered for you, and I fill up in my flesh what is still
lacking in regard to Christ's afflictions, for the sake of His
body, which is the church."