Each ministry has an individual message for the body of Christ (spiritual food for a well-rounded diet in order to make the body healthy). In days past the church’s religionist didn’t allow for the full ministry but basically accepted the Pastor, Teacher, and Evangelist.
Thus we were three fifths of the way prepared. While these ministry gifts are fully necessary, we must have the complete five ministries to be a healthy body and church. Each have their vital function and are a part of what God declares these gifts are to do relative to developing the church as mentioned in Eph. 4:12-16.