John 15:2-6

He cuts off every branch of mine that does not produce fruit. And he trims and cleans every branch that produces fruit so that it will produce even more fruit. You are already clean because of the words I have spoken to you. Remain in me, and I will remain in you. A branch cannot produce fruit alone but must remain in the vine. In the same way, you cannot produce fruit alone but must remain in me. “I am the vine, and you are the branches. If any remain in me and I remain in them, they produce much fruit. But without me they can do nothing. If any do not remain in me, they are like a branch that is thrown away and then dies. People pick up dead branches, throw them into the fire, and burn them.