'Purifying' in the Bible

Then Moses slaughtered it, took the blood, and applied it with his finger to the horns of the altar on all sides, purifying the altar. He poured out the blood at the base of the altar and consecrated it so that atonement can be made on it.

And she shall then continue in the blood of her purifying three and thirty days; she shall touch no hallowed thing, nor come into the sanctuary, until the days of her purifying be fulfilled.

But if she bear a maid child, then she shall be unclean two weeks, as in her separation: and she shall continue in the blood of her purifying threescore and six days.

And when the days of her purifying are fulfilled, for a son, or for a daughter, she shall bring a lamb of the first year for a burnt offering, and a young pigeon, or a turtledove, for a sin offering, unto the door of the tabernacle of the congregation, unto the priest:

“When he has finished purifying the most holy place, the tent of meeting, and the altar, he is to present the live male goat.