First you must explain the differences between ministering in the context of a church compared with ministry in the context of the chaplaincy.
Amid the similarities in the practices of pastors and chaplains, differences do exist. One significant contrast is preparation time. While a pastor usually preaches from a previously prepared sermon, a chaplain often has little or no time to plan the best words of comfort or counsel for an emergency situation. A chaplain must depend more on God to supply him or her with the right words.
The pastor is often the one expected to do the 1majority of the speaking, and the teaching. The chaplain does more listening, learning the needs of the individual, and offering the right words of comfort at the right time.
Pastors usually provide counsel to people guide them through the events that transpire in their everyday lives such as marriages, births, and illnesses. In contrast to this, chaplains counsel people in moments of extreme crisis and unexpected tragedy.
A pastor performs most of his duties within the church building, and the people, with some exceptions, come to him. The chaplain goes where the people with the needs are, often encountering personal risk. The chaplain may offer blessings and comfort in jails, homeless shelters, hospitals, emergency rooms, locker rooms, military bases, or even the battlefields.
The pastor usually works with people who share a common religion or belief system, enabling him to be familiar with the fine points of doctrine that apply to his congregation. The chaplain must be prepared to minister to a person of any, or no faith. This requires a broader knowledge base
The pastor is most often involved with established believers, or those who are seeking the truth of God’s word. The chaplain may see the particular individual only once, and have no opportunity for following up with that person. The chaplain may also encounter a higher number of people who blame God for their misfortunes, or are angry at Him because of personal losses or systematic injustice.
A pastor often stays in one city for several years, and often has a long-term placement. The chaplain, particularly military chaplains, must be prepared to relocate at a moment’s notice.
The pastor often works in an established and predictable weekly schedule. The chaplain may work long and irregular hours. Some chaplains are “on call” for their units, and may be expected to assist at any time of day or night. These disruptions can lead to a strain on the chaplain’s family life.