Acts 18:18
Paul Returns to Antioch
18 After this, Paul stayed many days longer and then took leave of xthe brothers1 and set sail for Syria, and with him yPriscilla and Aquila. At zCenchreae ahe had cut his hair, for he was under a vow.
Acts 21:24
24 take these men and zpurify yourself along with them and pay their expenses, yso that they may shave their heads. Thus all will know that there is nothing in what they have been told about you, but that you yourself also live in observance of the law.