Acts 21:24

Them take, and (d) purify thyself with them, and (e) 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.

(d) That is, consecrate thyself: for he does not speak here of the unclean, but of those who are subject to the vow of the Nazarites.

(e) That it may be known that you were not only present at the vow, but also a main participator in it: and therefore it is said afterwards that Paul declared the days of purification: for although the offerings for the Nazarites offerings were appointed, yet they might add somewhat unto them; see (Numbers 6:21).