1 Chronicles 24:19
These are their appointments for their service, to come in to the house of Jehovah, according to their ordinance by the hand of Aaron their father, as Jehovah God of Israel, commanded them.
1 Chronicles 9:25
And their brethren in their villages are to come in for seven days from time to time with these.
1 Chronicles 24:1
And to the sons of Aaron are their courses: sons of Aaron are Nadab, and Abihu, Eleazar, and Ithamar,
2 Chronicles 23:4
This is the thing that ye do: The third of you, going in on the sabbath, of the priests, and of the Levites, are for gatekeepers of the thresholds,
2 Chronicles 23:8
And the Levites and all Judah do according to all that Jehoiada the priest hath commanded, and take each his men going in on the sabbath, with those going out on the sabbath, for Jehoiada the priest hath not let away the courses.
1 Corinthians 14:40
let all things be done decently and in order.
Hebrews 7:11
If indeed, then, perfection were through the Levitical priesthood -- for the people under it had received law -- what further need, according to the order of Melchisedek, for another priest to arise, and not to be called according to the order of Aaron?