Bible Study with Fred; Acts 21:15-26: Paul is given a task by the elders at Jerusalem

Acts 21:15 ¶ And after those days we took up our carriages, and went up to Jerusalem. 16 There went with us also certain of the disciples of Caesarea, and brought with them one Mnason of Cyprus, an old disciple, with whom we should lodge. 17 And when we were come to Jerusalem, the brethren received us gladly. 18 And the day following Paul went in with us unto James; and all the elders were present. 19 And when he had saluted them, he
declared particularly what things God had wrought among the Gentiles by his ministry. 20 And when they heard it, they glorified the Lord, and said unto him, Thou seest, brother, how many thousands of Jews there are which believe; and they are all zealous of the law: 21 And they are informed of thee, that thou teachest all the Jews which are among the Gentiles to forsake Moses, saying that they ought not to circumcise theirchildren,
neither to walk after the customs. 22 What is it therefore? the multitude must needs come together: for they will hear that thou art come. 23 Do therefore this that we say to thee: We have four men which have a vow on them; 24 Them take, and purify thyself with them, and be at charges with them, that they may shave their heads: and all may know that those things, whereof they were informed concerning thee, are nothing; but that thou thyself also walkest orderly, and keepest the law. 25 As touching the Gentiles which believe, we have written and concluded that they observe no such thing, save only that they keep themselves from things offered to idols, and from blood, and from strangled, and from fornication. 26 Then Paul took the men, and the next day purifying himself with them entered into the temple, to signify the accomplishment of the days of purification, until that an offering should be offered for every one of them.