Genesis 23:3
And Abraham stood up from before his dead, and spake unto the sons of Heth, saying,
Cross-reference
In 23:5, the Hittites answer Abraham, calling him 'a prince of God' and offering him any tomb — the direct response to his request here.
In 23:7, Abraham bows before the people and addresses Ephron directly — continuing the negotiation begun with the Hittites here.
In 25:10, the field Abraham purchased from the Hittites is mentioned as his burial place — completing the story begun here.
In 49:30, Jacob recalls Abraham buying Machpelah from Ephron the Hittite — the very purchase now being negotiated here.
In 49:31, Jacob confirms Abraham and Sarah were buried at Machpelah — the burial site Abraham is now securing here.
In 10:15, Heth is listed as a son of Canaan, identifying the Hittites Abraham negotiates with as descendants of Canaan's line.
In 1 Chronicles 1:13, Heth appears in Canaan's genealogy — the same ancestor of the Hittites Abraham speaks with here.