John 15.10,11 "If you keep my commands, you will remain in my love, just as I have kept my Father's commands and remain in his love. I have told you this so that my joy may be in you and that your joy may be complete."
"We should, to begin with, think that God leads a very interesting life, and that he is full of joy. Undoubtedly he is the most joyous being in the universe. The abundance of his love and generosity is inseparable from his infinite joy. All of the good and beautiful things from which we occasionally drink tiny droplets of soul-exhilarating joy, God continuously experiences in all their breadth and depth and richness."
—Dallas Willard