Ammonite

Rehoboam's mother Naamah's Ammonite identity is noted here as part of his biographical record — a subtle reminder of the foreign influence that was woven into the royal household from his birth.

Zabad's Ammonite heritage is noted — a foreign-born servant becoming the instrument of divine justice against a Davidic king underscores how thoroughly God's protection had been withdrawn from Joash.

The Ammonites are named in the Law passage being read aloud as permanently excluded from Israel's assembly due to their historical hostility during the wilderness journey.

Ammonite identifies Tobiah's ethnic and political background — as a member of a people historically hostile to Israel, his resentment at Nehemiah's mission carries deeper historical weight than personal rivalry.

Ammonite is listed here as one of the forbidden nationalities of Solomon's wives — these were peoples God had explicitly told Israel not to intermarry with because of their idol worship.