In an orchestra, each musician must keep his eyes only on the conductor. If you are watching the person beside you, you will not only find yourself lagging behind, but you will create discord and disharmony, ruining the entire piece for everyone. An orchestra is made up of many different instruments, and they all play at different times and with different pitches. The tuba cannot play the notes of the flute, even if he tries, and the violin and the bass drum can never substitute for one another. Each instrument has its own unique part to contribute to the beauty of the whole. Some instruments are idle at times, contributing nothing, but the crash of cymbals at the climax of a musical number certainly can’t be replaced by a French horn.
So it is in the body of Christ. We cannot look at those around us to decide how to live, or we end up with discord and division. We must always keep our eyes on the Conductor, Jesus, so as not to disrupt the unity of the entire group. We also cannot expect that all members will behave alike. Each one has his own unique part, to be played at the proper time, and the combination of all those creates a beauty which can never be matched by any earthly production.