Some people complain about ministers being too repetitive. This may be a real problem in some cases, but we cannot forget that the Scriptures frequently use repetition. Jim O’Brien has a post on the Puritan John Arrowsmith’s explanation of the Bible’s use of repetition. You can read it here.
I appeal to you, brothers, to watch out for those who cause divisions and create obstacles contrary to the doctrine that you have been taught; avoid them. For such persons do not serve our Lord Christ, but their own appetites, and by smooth talk and flattery they deceive the hearts of the naïve. (Romans 16:17-18)