It is amazing how something so small can bring things to a halt. One little key can make the difference from being able to get into your house or office. One key lost or misplaced can keep you from getting from point A to B. The small key you keep in your pocket gives you access to your car, home, or office. Without that piece of metal that goes into the doorknob you will have to wait for someone to bring a backup key. The little key is important!
If you have a lawnmower and the little plastic center breaks on the rear wheel, it will render the machine unusable. A little piece of plastic the size of a half dollar that probably costs less than that to make, but without it the mower is as useless as to its effectiveness. You don’t think much about the little piece of plastic on the wheel before it breaks and then that’s all you can think about. The bottom line is without this fifty-cent piece of plastic, your mower is sidelined. The absence of one part, seemingly small part, can greatly delay the machine. It is the same way in the ministry. Every member is vital. The body is a unit, though it is made up of many parts; and though all its parts are many, they form one body (1 Corinthians 12:12a).