Love one another as I have loved you.
Jesus makes His own self-giving love the measure of ours.
What the Scriptures say
A new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another. By this shall all men know that ye are my disciples, if ye have love one to another. John 13:34-35 · KJV
This is my commandment, That ye love one another, as I have loved you. John 15:12 · KJV