In the Church of Jesus Christ of Latter-Day Saints, we do not have a priest/preacher/pastor that gives a sermon every week. Each week 2-3 different members of each ward are asked to speak on a topic that is selected by our Bishopric- the three men who lead our ward. We’re given guidelines as to how long our Talk should be, as well as direction in selecting appropriate source material. And, generally, each member can expect to be asked to speak every year or so.