Ministry is service to God and on behalf of God in the church and the world. Ministers are people who put themselves at the disposal of God for the benefit of others and God’s world. It is not limited by the place where the service is rendered, the function, the need met, by the title of the person or even by the overt reference to Christ. As we will see, the Greek word for ministry (diakonia) is simply the word ‘service’.
(The Abolition of the Laity – R. Paul Stevens)