A Christian not yielded to the Spirit does not manifest the Christ-life.  The Spirit of God has to permeate a life if that life is to radiate Him.  We cannot do anything apart from being filled with the Spirit.

I have a glove.  If I say to the glove, “Play the piano”, what does the glove do?  Nothing.  The glove cannot play the piano.  But if I put my hand in the glove and play the piano, what happens?  Music!  If I put my hand in a glove, and glove moves.  The glove does not get pious and say, “Oh hand, show me the way to go.”  It does not say anything; it just goes.  Spirit-filled people do not stumble and mumble around trying to find out what God wants.  They just go!

– John MacArthur