Acts 21:26
Then taking the men on the next day, being purified with them, Paul went into the temple, declaring the fulfillment of the days of the purification, until an offering should be offered for each of them.
Acts 24:18
Among which certain Jews from Asia found me purified in the temple, not with a crowd nor with tumult.
Numbers 6:13-20
And this is the law of the Nazarite, when the days of his separation are fulfilled. He shall be brought to the door of the tabernacle of the congregation.
Acts 21:24
taking them, be purified with them, and be at expense for them, so that they may shave their heads. And all may know that what they have been told about you is nothing, but you yourself also walk orderly and keep the Law.
1 Corinthians 9:20
And to the Jews I became as a Jew, so that I might gain the Jews. To those who are under the Law, I became as under the Law, so that I might gain those who are under the Law.