New Revised Standard Version
Once when he was serving as priest before God and his section was on duty,

Contemporary English Version
One day Zechariah's group of priests were on duty, and he was serving God as a priest.

New American Bible
Once when he was serving as priest in his division’s turn before God,

Douay-Rheims Bible
And it came to pass, when he executed the priestly function in the order of his course before God,

And it came to pass, when he executed the priestly function in the order of his course before God,

he.

Exodus 28:1,41 Take unto thee also Aaron thy brother with his sons, from among the children of Israel, that they may minister to me in the priest's office: Aaron, Nadab, and Abiu, Eleazar, and Ithamar. . . .

Exodus 29:1,9,44 And thou shalt also do this, that they may be consecrated to me in priesthood. Take a calf from the herd, and two rams without blemish, . . .

Exodus 30:30 Thou shalt anoint Aaron and his sons, and shalt sanctify them, that they may do the office of priesthood unto me.

Numbers 18:7 But thou and thy sons look ye to the priesthood: and all things that pertain to the service of the altar, and that are within the veil, shall be executed by the priests. If any stranger shall approach, he shall be slain.

1 Chronicles 24:2 But Nadab and Abiu died before their father, and had no children: so Eleazar, and Ithamar did the office of the priesthood.

2 Chronicles 11:14 Leaving their suburbs, and their possessions, and passing over to Juda, and Jerusalem, because Jeroboam and his sons had cast them off, from executing the priestly office to the Lord.

in.

Luke 1:5 There was in the days of Herod, the king of Judea, a certain priest named Zachary, of the course of Abia: and his wife was of the daughters of Aaron, and her name Elizabeth.

1 Chronicles 24:19 These are their courses according to their ministries, to come into the house of the Lord, and according to their manner under the hand of Aaron their father: as the Lord the God of Israel had commanded.

2 Chronicles 8:14 And he appointed according to the order of David his father the offices of the priests in their ministries: and the Levites in their order to give praise, and minister before the priests according to the duty of every day: and the porters in their divisions by gate and gate: for so David the man of God had commanded.

2 Chronicles 31:2,19 And Ezechias appointed companies of the priests, and the Levites, by their courses, every man in his own office, to wit, both of the priests, and of the Levites, for holocausts, and for peace offerings, to minister, and to praise, and to sing in the gates of the camp of the Lord. . . .

Ezra 6:18 And they set the priests in their divisions, and the Levites in their courses over the works of God in Jerusalem, as it is written in the book of Moses.