In 1 Chronicles 5:10, the same tribes fought the Hagrites under Saul. This earlier war parallels the later campaign against Hagrites and allies.

1 Chronicles 1:31 identifies Jetur and Naphish as sons of Ishmael. This reveals the enemies in 5:19 are Ishmaelite tribes.

Genesis 25:15 lists Jetur and Naphish among Ishmael's sons. This confirms the enemies' lineage as descendants of Ishmael.

Psalm 83:6 also lists the Hagrites among Israel's enemies — the same group warred against here.