1 Chronicles 24:19
This is their ordering in their service to come into the house of Jehovah, according to their ordinance, through Aaron their father, as Jehovah the God of Israel had commanded him.
1 Chronicles 9:25
And their brethren, in their villages, were to come after every seven days from time to time with them.
1 Chronicles 24:1
And the divisions of the sons of Aaron: the sons of Aaron, Nadab and Abihu, Eleazar and Ithamar.
2 Chronicles 23:4
This is the thing which ye shall do: a third part of you that come in on the sabbath, of the priests and of the Levites, shall be keepers of the doors;
2 Chronicles 23:8
And the Levites and all Judah did according to all that Jehoiada the priest commanded; and they took every man his men, those that were to come in on the sabbath, with them that were to go forth on the sabbath; for Jehoiada the priest did not liberate the divisions.
1 Corinthians 14:40
But let all things be done comelily and with order.
Hebrews 7:11
If indeed then perfection were by the Levitical priesthood, for the people had their law given to them in connexion with it, what need was there still that a different priest should arise according to the order of Melchisedec, and not be named after the order of Aaron?