2 Chronicles 5:11

Now when the priests had come out of the holy place, (for all the priests who were present had made themselves holy, not keeping to their divisions;

Exodus 19:10

And the Lord said to Moses, Go to the people and make them holy today and tomorrow, and let their clothing be washed.

Exodus 19:14-15

Then Moses went down from the mountain to the people, and made the people holy; and their clothing was washed.

1 Chronicles 24:1-31

Now the divisions into which the sons of Aaron were grouped were these: the sons of Aaron, Nadab and Abihu, Eleazar and Ithamar.

2 Chronicles 29:5

And said to them, Give ear to me, O Levites: now make yourselves holy, and make holy the house of the Lord, the God of your fathers, and take away everything unclean from the holy place.

2 Chronicles 29:15

And they got their brothers together and made themselves holy, and went in, as the king had said by the word of the Lord, to make the house of the Lord clean.

2 Chronicles 29:34

There were not enough priests for the work of cutting up all the burned offerings; so their brothers the Levites gave them help till the work was done and the priests had made themselves holy: for the Levites were more upright in heart to make themselves holy than the priests.

2 Chronicles 30:15

Then on the fourteenth day of the second month they put the Passover lambs to death: and the priests and the Levites were shamed, and made themselves holy and took burned offerings into the house of the Lord.

2 Chronicles 30:17-20

For there were still a number of the people there who had not made themselves holy: so the Levites had to put Passover lambs to death for those who were not clean, to make them holy to the Lord.

2 Chronicles 35:4

And make yourselves ready in your divisions, by your families, as it is ordered in the writings of David, king of Israel, and of Solomon his son;

Job 1:5

And at the end of their days of feasting, Job sent and made them clean, getting up early in the morning and offering burned offerings for them all. For, Job said, It may be that my sons have done wrong and said evil of God in their hearts. And Job did this whenever the feasts came round.

Treasury of Scripture Knowledge

Summary

And it came to pass, when the priests were come out of the holy place: (for all the priests that were present were sanctified, and did not then wait by course:

Wait by course

Bible References

Sanctified

2 Chronicles 29:5
And said to them, Give ear to me, O Levites: now make yourselves holy, and make holy the house of the Lord, the God of your fathers, and take away everything unclean from the holy place.
2 Chronicles 30:15
Then on the fourteenth day of the second month they put the Passover lambs to death: and the priests and the Levites were shamed, and made themselves holy and took burned offerings into the house of the Lord.
Exodus 19:10
And the Lord said to Moses, Go to the people and make them holy today and tomorrow, and let their clothing be washed.
Job 1:5
And at the end of their days of feasting, Job sent and made them clean, getting up early in the morning and offering burned offerings for them all. For, Job said, It may be that my sons have done wrong and said evil of God in their hearts. And Job did this whenever the feasts came round.

Wait by course

2 Chronicles 35:4
And make yourselves ready in your divisions, by your families, as it is ordered in the writings of David, king of Israel, and of Solomon his son;

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain