John 14:11-13

11 Believe me that I am in the Father, and the Father in me: or else believe me for the very works' sake. 

12 Verily, verily, I say unto you, He that believeth on me, the works that I do shall he do also; and greater works than these shall he do; because I go unto my Father. 

13 And whatsoever ye shall ask in my name, that will I do, that the Father may be glorified in the Son.