You've heard the saying "Your actions speak so loud I can't hear a word you are saying?" Well our hearts hear the words Jesus never has to say because He demonstrated them on the cross and even now through our day to day fellowship with the risen Christ.
John 21;25 puts it like this "And there are also many other things which Jesus did, the which, if they should be written every one, I suppose that even the world itself could not contain the books that should be written. Amen."
(New Release)
