Different members receive different gifts to enable them to perform different ministries. The total sum of these ministries gives a complete ministry of Jesus to the church, and through the church to the world. There is variety. There is not just one gift. The clergyman is not the only gifted person.
Variety produces harmony and completeness.
Nor does the Bible suggest that everyone must have each gift, or all have the same special gifts. If the whole body were an eye, where would be the hearing. Not all are specially gifted. This is contentious, but the Bible does seem to imply that not every member of a Christian fellowship has a special spiritual gift. Jesus sees to it that the body is complete, that gifted members are present to supply the whole range of ministries to the church.