'Purifying' in the Bible

Then she shall remain [intimately separated] thirty-three days to be purified from the blood; she shall not touch any consecrated thing nor enter the [courtyard of the] sanctuary until the days of her purification are over.

‘When the days of her purification are completed, whether for a son or for a daughter, she shall bring to the priest at the doorway of the Tent of Meeting a one year old lamb as a burnt offering and a young pigeon or a turtledove as a sin offering;

He said, “Bring me a new jar, and put salt in it.” So they brought it to him.

Now when it was each young woman’s turn to go before King Ahasuerus, after the end of her twelve months under the regulations for the women—for the days of their beautification were completed as follows: six months with oil of myrrh and six months with [sweet] spices and perfumes and the beauty preparations for women—

Then Paul took the [four] men, and the next day he purified himself along with them [by submitting to the ritual]. He went into the temple to give notice of [the time] when the days of purification [ending each vow] would be fulfilled and the usual offering could be presented on behalf of each one.

of teaching about washings (ritual purifications), the laying on of hands, the resurrection of the dead, and eternal judgment. [These are all important matters in which you should have been proficient long ago.]