Then the Nazirites are to shave their heads at the entrance to the Tent of Meeting. They shall take the hair from their heads that were dedicated, and place it on the fire under the peace offering.
He will also sacrifice a ram as a peace offering to the Lord, together with the basket of bread made without yeast. In addition the priest will present the grain offering and drink offering.
They must not use a razor on their heads during the whole time of this promise of dedication. They must remain holy until their time of dedication to the Lord is finished. They must let their hair grow long.
However, if someone dies suddenly close to them, making them unclean, they must wait seven days, and on the seventh day when they are made clean again they are to shave their heads.
Paul stayed on for a while. Then he left the believers and sailed for Syria, taking Priscilla and Aquila along with him. He had his head shaved while in Cenchrae, because he had taken a vow.
Go with them and perform the purification rituals with them, paying for them to have their heads shaved. That way everyone will know there's no truth to the rumors they've heard about you, but that you yourself observe the Law in the way that you live.
So Paul took the men with him, and the next day went and purified himself with them. Then he went to the Temple to give notice regarding the end of the time of purification and the offering which would be made for each of them.