Acts 21:17-24

When we arrived in Jerusalem, the brothers welcomed us warmly. The next day Paul went with us to visit James; and all the elders were present. After greeting them, he related one by one the things that God had done among the Gentiles through his ministry. When they heard it, they praised God. Then they said to him, “You see, brother, how many thousands of believers there are among the Jews, and they are all zealous for the law. They have been told about you that you teach all the Jews living among the Gentiles to forsake Moses, and that you tell them not to circumcise their children or observe the customs. What then is to be done? They will certainly hear that you have come. So do what we tell you. We have four men who are under a vow. Join these men, go through the rite of purification with them, and pay for the shaving of their heads. Thus all will know that there is nothing in what they have been told about you, but that you yourself observe and guard the law.