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

“For just as each of us has one body with many members, and these members do not all have the same function, so it is with Christ’s body. We are many parts of one body, and we all belong to each other. Now you and I are the body of Christ, and each of us is a member of it.” Therefore, we ought to love one another.