What does the Bible say about the new commandment to love one another?

In John 13:34, Jesus gives His disciples a new commandment: 'A new commandment I give to you, that you love one another; even as I have loved you, that you also love one another.' This command is not simply a reiteration of the Old Testament law but embodies a deeper reality, reflecting the love that Christ demonstrated through His sacrifice and ongoing relationship with His people. The love demanded is active, sacrificial, and rooted in the profound love that Christ has shown us. This is transformative love, which is central to the identity of a believer and the community of faith.