What task was John the Baptist's dad assigned as part of his priesthood?

ANSWER

Burn incense

Luke 1 :

(8) Once when Zechariah's division was on duty and he was serving as priest before God, (9) he was chosen by lot, according to the custom of the priesthood, to go into the temple of the Lord and burn incense. (10) And when the time for the burning of incense came, all the assembled worshipers were praying outside.
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