Acts 21:23

Overview - Acts 21
Paul calls at the house of Philip, whose daughters prophesy.
10 Agabus, foretelling what should befall him at Jerusalem, he will not be dissuaded from going thither.
17 He comes to Jerusalem;
27 where he is apprehended, and in great danger, but by the chief captain is rescued;
37 and requests, and is permitted to speak to the people.
Treasury of Scripture Knowledge

Acts 21:23  (King James Version)
Do therefore this that we say to thee: We have four men which have a vow on them;

We have
18:18 Numbers 6:2-7