All the days of the vow of his separation there shall no rasor come upon his head: until the days be fulfilled, in the which he separateth himself unto the LORD, he shall be holy, and shall let the locks of the hair of his head grow. There shall no razor come upon his head - The vow of the Nazarite consisted in the following particulars: -
1. He consecrated himself in a very especial and extraordinary manner to God.
2. This was to continue for a certain season, probably never less than a whole year, that he might have a full growth of hair to burn in the fire which is under the sacrifice of the peace-offering, Numbers 6:18.
3. During the time of his separation, or nazarate, he drank no wine nor strong drink; nor used any vinegar formed from any inebriating liquor, nor ate the flesh or dried grapes, nor tasted even the kernels or husks of any thing that had grown upon the vine.
4. He never shaved his head, but let his hair grow, as the proof of his being in this separated state, and under vows of peculiar austerity.
5. He never touched any dead body, nor did any of the last offices, even to his nearest kin; but was considered as the priests, who were wholly taken up with the service of God, and regarded nothing else.
6. All the days of his separation he was holy, Numbers 6:8.
During the whole time he was to be incessantly employed in religious acts.