Since, we are parts of a whole, all the parts need to work together. Hands and eyes need to be coordinated. Feet need to find a rhythm, or most certainly, the nose will complain loudly. Even the invisible kidney must do its part ... or the whole will come crashing down.
The health, growth and ability to reproduce of the body is based on the ability of each part to perform its function. It is the same with the Body of Christ. In most churches, a minority - which includes the leadership - does all the work of the church. And it specifically states in Scripture that the leadership's responsibility is to teach and empower the other members of the Body to serve God, to build the church and build God's kingdom.
Obviously, the leaders should obey in all areas too. But they should still teach the rest of the Body how to obey God in all areas too. They should proclaim the gospel, and they should teach the body how to effectively proclaim the gospel. They should physically serve, and they should teach the Body how to physically serve. They should love, and they should teach the Body how to love. They should pray, and they should teach the Body how to pray. They should teach the Body how to complete all areas of obedience, and they should teach the Body how to teach others how to complete all areas of obedience.