Years ago I was trained under the renowned Bible-preaching teacher, Haddon Robinson. He taught an entire generation of preachers to focus on Big-idea preaching. That means that our goal is to communicate one main idea. During that time, it was common for many preachers to offer multiple opinions on a wide variety of topics, week in and week out.
Dr. Robinson pushed back against that trend as he encouraged preachers to develop their sermon around the main thought expressed in the text (or passage).
Robinson’s book, Biblical Preaching, continues to be a go-to for many of us today.