Prayer is a Topic of the Day
Preaching in Mormonism during the 19th century was mostly an on-the-spot moment of preparation, following New Testament dictum that the Holy Spirit would give the words as they were needed. Gradually, that meme was broken. We still hear the extemporaneous sermon, and there is a bit of romance in it, but in large public gatherings, sermons are often preplanned at least and most often, pre-written. I frequently enjoy both. Can God inspire the preacher who prepares his sermons before the event? Of course.