John 15:26-27 

(26) But when the Comforter is come, whom I will send unto you from the Father, even the Spirit of truth, which proceedeth from the Father, he shall testify of me:  
(27)  And ye also shall bear witness, because ye have been with me from the beginning.

John 15:5-7 (5) I am the vine, ye are the branches: He that abideth in me, and I in him, the same bringeth forth much fruit: for without me ye can do nothing.  (6)  If a man abide not in me, he is cast forth as a branch, and is withered; and men gather them, and cast them into the fire, and they are burned.  (7)  If ye abide in me, and my words abide in you, ye shall ask what ye will, and it shall be done unto you.