Acts 21:26
Then the next day, Paul took the men and purified himself with them, and entered into the temple, declaring that he observed the days of the purification, until that an offering should be offered for every one of them.
Acts 24:18
in the which they found me purified in the temple, neither with multitude, nor yet with unquietness.
Numbers 6:13-20
"'This is the law of the abstainer, when the time of his abstinence is out; he shall be brought unto the door of the tabernacle of witness
Acts 21:24
Them take and purify thyself with them, and do cost on them, that they may shave their heads and all shall know that those things which they have heard concerning thee are nothing: but that thou thyself also walkest and keepest the law.
1 Corinthians 9:20
And unto the Jews, I became as a Jew, to win the Jews. To them that were under the law, was I made as though I had been under the law, to win them that were under the law.