As wonderful and sophisticated as the heart is, it was never made to be just a heart, but a part of a body. It has no value to the body outside the body. And the heart itself can't thrive outside the body. As incredible and wonderful as you are, Christian, you were never made just to be an individual Christian, but a part of body. As every organ and every cell is God-created to be an active member of the human body, so every true Christian is God-created to be an active member of a local body of Christ.