1 Corinthians 12:18-21

18But as a matter of fact, God has placed each of the members in the body just as he decided.

19If they were all the same member, where would the body be?

20So now there are many members, but one body.

21The eye cannot say to the hand, “I do not need you,” nor in turn can the head say to the foot, “I do not need you.”