'Purification' in the Bible

For 33 days after this, she is to remain in purification due to her blood loss. She is not to touch any sacred thing or enter the sanctuary until the days of her purification have been completed.

"If she gives birth to a female, then she is to remain unclean for two weeks, just like her menstruation. She is to remain in purification for 66 days due to her blood loss.

When the days of her purification have been completed, whether for her son or daughter, she is to bring to the priest at the entrance to the Tent of Meeting a one year old lamb for a whole burnt offering or a young dove for a sin offering.

When someone suddenly dies beside him, so that his consecrated head is defiled, then he is to shave his head on the day of his purification. Seven days later he is to shave it again.

Then someone who is unclean is to gather the ashes of the heifer and lay them outside the camp in a clean place. This is to be done for the community of Israel to use for water of purification from sin.

"Instead, they are to assist by lending a hand to the descendants of Aaron regarding service to the Temple of the LORD relating to the courts, the chambers, purification of everything pertaining to holiness, and to anything else pertaining to service on behalf of the Temple of God, including assisting with the rows of showbread, selecting flour for the grain offerings, the unleavened bread, baked offerings, and oil-based offerings, no matter what the quantity or sizes.

They carried out their service obligations to their God and their service obligations of purification according to what David and his son Solomon had commanded.