'Purifying' in the Bible

Thus you shall do to them, for their cleansing: sprinkle purifying water on them, and let them use a razor over their whole body and wash their clothes, and they will be clean.

For their office is to assist the sons of Aaron with the service of the house of the Lord, in the courts and in the chambers and in the purifying of all holy things, even the work of the service of the house of God,

Then Paul took the men, and the next day, purifying himself along with them, went into the temple giving notice of the completion of the days of purification, until the sacrifice was offered for each one of them.