Levites: The Chief Over the Kohathites Was the Oldest Son of the Ruling High Priest
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Numbers 3:32
The chief of the leaders of the Levites was Eleazar son of Aaron the priest; he oversaw those responsible for the duties of the sanctuary.
1 Chronicles 9:20
In earlier times Phinehas son of Eleazar had been in charge of the gatekeepers, and the LORD was with him.