“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.”
King James Version (KJV)
21:24 And all will know - that thou thyself walkest orderly, keeping the law - Ought he not, without any reverence to man, where the truth of God was so deeply concerned, to have answered plainly, I do not keep the Mosaic law; neither need any of you. Yea, Peter doth not keep the law. And God himself expressly commanded him not to keep it; ordering him to go in to men uncircumcised, and to eat with them, #Acts 11:3|, which the law utterly forbids.
Ac 21:24 Pay their expenses. The advice to Paul is to associate himself in this vow, for the necessary expenses, and thus show that he kept the time-honored customs of the Jewish race.