From: John 15:9-11
The Vine and the Branches (Continuation)
(Jesus said to His disciples,)  "As the Father has loved Me, so have I loved you; abide in My love.  If you keep My commandments, you will abide in My love, just as I have kept My Father's commandments and abide in His love.  These things I have spoken to you, that My joy may be in you, and that your joy may be full."
9-11. Christ's love for Christians is a reflection of the love the Three Divine Persons have for one another and for all men: "We love, because He first loved us" (1 John 4:19).
The certainty that God loves us is the source of Christian joy (verse 11), but it is also something which calls for a fruitful response on our part, which should take the form of a fervent desire to do God's will in everything, that is, to keep His commandments, in imitation of Jesus Christ, who did the will of His Father (cf. John 4:34).
Source: "The Navarre Bible: Text and Commentaries". Biblical text taken from the Revised Standard Version and New Vulgate. Commentaries made by members of the Faculty of Theology of the University of Navarre, Spain. Published by Four Courts Press, Kill Lane, Blackrock, Co. Dublin, Ireland. Reprinted with permission from Four Courts Press and Scepter Publishers, the U.S. publisher.