John 15:6-8

If a man abide not in me, he is cast forth as a branch, and is withered; and they gather them, and cast them into the fire, and they are burned. If ye abide in me, and my words abide in you, ask whatsoever ye will, and it shall be done unto you. Herein is my Father glorified, that ye bear much fruit; and so shall ye be my disciples.