John 6:63 in the King James Version
It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life.
Context
62 Then what if you would see the Son of Man ascending to where he was before?
63 It is the spirit who gives life. The flesh profits nothing. The words that I speak to you are spirit, and are life.
64 But there are some of you who don’t believe.” For Jesus knew from the beginning who they were who didn’t believe, and who it was who would betray him.