John 15:1-8 (NRSV)
15 “I am the true vine, and my Father is the vine grower. 2 He removes every branch in me that bears no fruit. Every branch that bears fruit he prunes to make it bear more fruit. 3 You have already been cleansed by the word that I have spoken to you. 4 Abide in me as I abide in you. Just as the branch cannot bear fruit by itself unless it abides in the vine, neither can you unless you abide in me. 5 I am the vine, you are the branches. Those who abide in me and I in them bear much fruit, because apart from me you can do nothing. 6 Whoever does not abide in me is thrown away like a branch and withers; such branches are gathered, thrown into the fire, and burned. 7 If you abide in me, and my words abide in you, ask for whatever you wish, and it will be done for you. 8 My Father is glorified by this, that you bear much fruit and become my disciples.