'Purifies' in the Bible

“The one who is clean is to sprinkle the unclean person on the third day and the seventh day. After he purifies the unclean person on the seventh day, the one being purified must wash his clothes and bathe in water, and he will be clean by evening.

So if anyone purifies himself from anything dishonorable, he will be a special instrument, set apart, useful to the Master, prepared for every good work.

For if the blood of goats and bulls and the ashes of a heifer sprinkled on those who are unclean purifies them physically,

And everyone who has this hope in Him purifies himself just as He is pure.