In the works of John (his Gospel and Epistles), one of his main emphases is in the understanding of love. How does God love us? How do we love God? Are we to love others? These questions are definitively answered in this section on what it means to love.
9As the Father has loved me, so have I loved you. Abide in my love. 10If you keep my commandments, you will abide in my love, just as I have kept my Father’s commandments and abide in his love. 11These things I have spoken to you, that my joy may be in you, and that your joy may be full.
12[Jesus said:] “This is my commandment, that you love one another as I have loved you. 13Greater love has no one than this, that someone lays down his life for his friends. 14You are my friends if you do what I command you. 15No longer do I call you servants, for the servant does not know what his master is doing; but I have called you friends, for all that I have heard from my Father I have made known to you. 16You did not choose me, but I chose you and appointed you that you should go and bear fruit and that your fruit should abide, so that whatever you ask the Father in my name, he may give it to you. 17These things I command you, so that you will love one another.