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. —Romans 12:4-5.
An arm detached from a living body is just a dead and useless body part. Fingers detached from the hand can’t write, grasp, work, or paint. A foot detached from a living body can’t walk. We belong to each other because we need each other. We belong to each other because we belong to Christ, who holds his Body together and fills it with life because of his leadership and grace. We find our freedom to be what God has made us to be when we walk in harmony with each other and follow the lead of Christ, who is our Head! The Body of Christ finds its purpose and usefulness as each part offers itself to the Body for the good of the Body. We as disciples discover our usefulness when we offer ourselves to the rest of the Body and the work of the Lord.