Luke 1:5

5There was, in the days of Herod, king of Judea, a certain priest named Zechariah, of the section of Abijah, and his wife was of the daughters of Aaron, and her name was Elizabeth.
1:5 Of the course of Abia: that is, of the rank of Abia, which word in the Greek is commonly put for the employment of one day: but here for the functions of a whole week. For, by the appointment of David, 1 Par. 24., the descendants from Aaron were divided into twenty-four families, of which the eighth was Abia, from whom descended this Zachary, who at this time was in the week of his priestly functions.(Challoner)
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