Acts 21:26
Then Paul took the men, and the next day being purified with them entered into the temple to signify the accomplishment of the days of purification till an offering should be offered for every one of them.
Acts 24:18
Upon which some Jews from Asia found me purified in the temple, neither with multitude nor with tumult:
Acts 21:24
and join in their expences, that they may shave their head: and that all may know, that there is nothing in what they have heard of thee; but thou thyself walkest according to the law.
1 Corinthians 9:20
And to the Jews I became as a Jew, that I might gain the Jews; that is, to those, who are under the law, as under the law, that I might gain those who are under the law: