Guitar strings create the sound and the body of the guitar allows those vibrations to resonate and amplify and echo and some great sounds can be produced. The same is to be true of us. Jesus Christ acts as the strings. We’re to be the hollow body of the guitar. We’re to resonate the music that HE is playing, after all, we don’t make the sound. He makes the sound and as it gets down inside of us and fills us we can then echo the sound and allow it to amplify so that the world around us can hear the message of the true life that Jesus Christ offers us.