Acts 21:26
Then Paul, taking the men, on the next day, having been purified, entered with them into the temple, signifying the time the days of the purification would be fulfilled, until the offering was offered for every one of them.
Acts 24:18
Whereupon they found me purified in the temple, with neither crowd nor tumult. But it was certain Jews from Asia,
Numbers 6:13-20
And this is the law of the Nazarite on the day when the days of his consecration are fulfilled: he shall be brought to the entrance of the tent of meeting.
Acts 21:24
take these and be purified with them, and pay their expenses, that they may have their heads shaved; and all will know that of those things of which they have been informed about thee nothing is true; but that thou thyself also walkest orderly, keeping the law.
1 Corinthians 9:20
And I became to the Jews as a Jew, in order that I might gain the Jews: to those under law, as under law, not being myself under law, in order that I might gain those under law: