How do we know that Christians are called to serve each other?

In Romans 12, Paul emphasizes that each believer is a part of the body of Christ, and thus has a role to play in serving one another. This service is a reflection of Christ's own ministry, where He came not to be served, but to serve others. We are encouraged to use our differing gifts for the edification of the body of Christ, which is built on the foundation of His sacrificial love. Therefore, our relationship with Christ compels us to serve one another in tangible ways, fostering a healthy and functioning church community.