Numbers 33:38 recounts the same event: Aaron going up Mount Hor and dying there, confirming the location and command.

Numbers 33:39 adds Aaron's age at death (123) — a detail not in the main narrative here.

Numbers 3:32 identifies Eleazar as chief over the Levite leaders, showing his authority before this succession.

Exodus 6:23 lists Eleazar as Aaron's son, confirming the family relationship of the successor.

Ezra 7:5 traces Ezra's genealogy through Eleazar, linking the high priestly line to this moment.