Sub-dividing the Sermon
First spot the structure

As in the Pater Noster lighthouse, repetition is an obvious structural feature of the Sermon on the Mount. But to focus solely on repeated elements is to overlook other important structural features, such as a sequence of themes (particularly one that mirrors a foundational text), or the use of more subtle poetic structures.
The way you sub-divide the Sermon on the Mount into more manageable pieces is important, because it can give a verse a completely different emphasis. Get it badly wrong and you can miss the point entirely. The sensible approach is to first identify the underlying structure, then break that apart along its natural seams. However, it is not quite that easy with the Sermon, for it can be treated as:
- Teaching on the way, addressing the Ten Commandments, and delivered in typically Rabbinic style (the approach used in the outline on this site);
- A series of stylistically similar blocks (the traditional approach used by many scholars);
- A poetic structure with the Lord’s prayer as its center-piece, (an approach suggested by U. Luz).
The identification of multiple structures within the Sermon does not mean that only one is right or that only one is original. The three structures identified above appear complementary and therefore could be deliberately designed to allow this incredible piece of teaching to say different things depending upon how you approach it. As the three structures interlock, they demonstrate that the text is much more than a simple collection of sayings that one can pluck out and examine in isolation. Though, as any analysis of parallel gospel passages quickly reveals, many sections of the Sermon on the Mount happily lend themselves to re-use in other contexts.