Our Lord Jesus says: “God is a Spirit: and they that worship him must worship him in spirit and in truth” (John 4:23–24). “It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life” (John 6:63).
“There is therefore now no condemnation to them which are in Christ Jesus, who walk not after the flesh, but after the Spirit” (Romans 8:1).
“Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap. For he that soweth to his flesh shall of the flesh reap corruption; but he that soweth to the Spirit shall of the Spirit reap life everlasting” (Galatians 6:7–8).