James’ epistle is often viewed as a somewhat haphazard collection of fragmented thoughts, with no apparent structure or order. He moves from one topic to another, and we know not why.
Admittedly, James does not write in the form of an argumentative discourse. His letter is more like a collection of wisdom sayings. It even more closely resembles a series of teachings like one encounters in the Sermon on the Mount (which James draws from pervasively). But this does not mean that the book has no structure. James is a chiasm. At least, I think so.