From what age could a Kohen (priest) serve in the Beit Hamikdash (Temple)? And until what age?
AskTheRabbi.org answered:
The Talmud, Tarctate Chullin 24, teaches that a Kohen was able to serve in the Temple from the time that he showed physical signs of maturity (i.e. two pubic hairs) and there was no maximal age limit for him to be able to serve.
