1 Corinthians 12:12
The body is a unit, though it is comprised of many parts. And although its parts are many, they all form one body. So it is with Christ.

Ephesians 4:4
There is one body and one Spirit, just as you were called to one hope when you were called;

Ephesians 4:16
From Him the whole body is fitted and held together by every supporting ligament. And as each individual part does its work, the body grows and builds itself up in love.