Sometimes even Christians who are relatively mature in the Spirit lack a basic understanding of the overarching message and content of Scripture. They know what the Bible teaches about many different topics. But they do not know how these topics relate to the fundamental worldview of the Bible, and to the big picture of the Scripture. And they do not know how each part of Scripture contributes to this big picture.
But when believers come to understand the main story of the Bible, many of the things they previously knew come into clearer focus. And many of the things that they used to find confusing begin to make sense. And when they realize how each part of the Bible contributes to this meaning, they are better prepared to use the whole Bible in their Christian lives and ministries.