Genesis 36 lists the descendants of Esau, also known as Edom. Verse 28, "These are the children of Dishan: Uz and Aran," simply states that Uz and Aran were the sons (or descendants) of a man named Dishan.

Here's a breakdown of what it means within the larger context:

Genealogy: This verse is part of a larger genealogical record. The purpose is to trace the lineage of Esau/Edom, showing his descendants and their importance in the region.
Dishan: Dishan was a Horite chieftain (a pre-Edomite people who lived in the region). Genesis 36:20-30 describes the Horite rulers of Seir, and Dishan is listed among them.
Uz and Aran: These are Dishan's two named sons or descendants. We don't know much about them individually beyond this brief mention.
Importance for Understanding Edom: By listing the descendants of Esau and including figures like Dishan and his sons (who were originally Horite), the Bible highlights the intermingling and eventual dominance of the Edomites over the earlier inhabitants of the land.

In short, the verse is a simple statement of family lineage within the larger context of the genealogy of Esau/Edom and the people who inhabited the region of Seir. It's important for understanding the history and relationships between different groups in the biblical narrative.