The phrase "great preacher" is used to describe someone who is exceptional at speaking and spreading religious messages to a congregation. Full definition
You may learn to preach from the tapes of great preachers, and refine your theology by reading the writings of seminary professors. (religion-online.org)
MLK, great preacher with a flawed religion both historically and theologically. (religion.blogs.cnn.com)
Revivalism produced great preachers and giants in leadership and organization. (religion-online.org)