Acts 21:26
Then Paul took the men, and the next day, purified himself and went with them into the temple, declaring the fulfillment of the days of purification, until the offering was offered for every one of them.
Acts 24:18
amid which certain Jews from Asia found me purified in the temple, not with a mob, nor with turmoil.
Numbers 6:13-20
"'This is the law of the Nazirite: when the days of his separation are fulfilled, he shall be brought to the door of the Tent of Meeting,
Acts 21:24
Take them, and purify yourself with them, and pay their expenses for them, that they may shave their heads. Then all will know that there is no truth in the things that they have been informed about you, but that you yourself also walk keeping the law.
1 Corinthians 9:20
To the Jews I became as a Jew, that I might gain Jews; to those who are under the law, as under the law, that I might gain those who are under the law;