Genesis 36:15 is part of a larger genealogical section that lists the descendants of Esau (also known as Edom). This verse specifically lists the first group of "chiefs" (or leaders, princes) who came from the line of Eliphaz, Esau's firstborn son.

Here's a breakdown of the meaning:

"These are the chiefs of the sons of Esau:" This introduces a list of important leaders who descended from Esau. It's essentially saying, "Here are some prominent figures from Esau's family."
"the sons of Eliphaz the firstborn of Esau:" It clarifies that these chiefs are from the lineage of Eliphaz, who was Esau's eldest son. This is important because it establishes the hierarchy and order of succession within Esau's descendants.
"chief Teman, chief Omar, chief Zepho, chief Kenaz,": This lists the individual chiefs: Teman, Omar, Zepho, and Kenaz. The repetition of "chief" emphasizes their position and authority. These individuals were likely heads of clans or tribes within the Edomite people.

Significance:

Genealogy and History: This verse provides valuable historical information about the Edomite people and their tribal structure. Genealogies in the Bible were often used to establish identity, land rights, and lineage.
Leadership and Authority: The designation of these men as "chiefs" shows that the Edomites had a system of leadership and governance, likely based on tribal or clan structures.
Potential for Territorial Association: Some of these names, like "Teman," are also associated with specific regions or cities in Edom. This suggests that these chiefs may have been associated with particular territories or settlements. Teman was particularly important in Edomite history.

In summary, Genesis 36:15 is a concise statement identifying the first group of prominent leaders descended from Esau through his son Eliphaz, offering insights into the social and political structure of the Edomite people.